electron: added and linked, added keyring fix

wiki/betterdiscord.md

@@ -3,6 +3,7 @@
 [BetterDiscord](https://betterdiscord.app) is an unofficial extension to
 [Discord](/wiki/discord.md) which allows to add various functionality through plugins and new
 themes.
+It is not a standalone client.
 
 ## Setup
 

wiki/discord.md

@@ -2,6 +2,8 @@
 
 [Discord](https://discord.com/) is an social platform that combines voice and video conferences as
 well as instant messaging chats.
+Additionally to the default website Discord also features a desktop client in the form of an
+[Electron-based app](/wiki/electron.md).
 
 ## Usage
 

wiki/electron.md

@@ -0,0 +1,48 @@
+# Electron
+
+[Electron](https://electronjs.org/) is an open-source framework that allows developers to build
+cross-platform desktop applications using web technologies like JavaScript,
+[HTML](/wiki/markup_language.md), and CSS.
+It combines the Chromium [browser](/wiki/web_browser.md) and Node.js.
+
+## Troubleshooting
+
+This section will focus on errors and the fixing of errors of /name/.
+
+## Linux: `Could not detect a default secure credential storage on your device.`
+
+A possible issue for Electron apps on [Linux](/wiki/linux.md) is the following error.
+
+```sh 
+not detect a default secure credential storage on your device.
+```
+
+This occurs because Electron relies on a Secret Service such as the GNOME Keyring, among others) to
+store passwords securely on the system.
+And often appears on more minimal window managers on [Xorg](/wiki/linux/x_window_system.md) or
+[Wayland](/wiki/linux/wayland.md).
+If no compatible service is running or detected, apps cannot save credentials.
+
+Using the following steps this issue can be solved.
+Firstly - if not already done - install a secret service.
+For the Gnome Keyring install the [packages](/wiki/linux/package_manager.md) `libsecret` and
+`gnome-keyring`.
+The name may differ slightly depending on the [package manager](/wiki/linux/package_manager.md)
+used.
+Afterwards make sure to run the service and enable it if not already done.
+An example for this is shown in the following command
+
+```sh 
+eval $(/usr/bin/gnome-keyring-daemon --start)
+```
+
+Finally the Electron app `<electron-app>` can be started.
+For the secure credential storage to be reachable the environment variable `XDG_CURRENT_DESKTOP`
+has to be set.
+Due to this environment variable being possibly relevant for the system-wide settings it is
+recommended to only set it for the Electron app by running the following command in a sub-shell.
+
+```sh
+export XDG_CURRENT_DESKTOP=GNOME
+<electron-app>
+```

wiki/linux/raspberry_pi.md

@@ -20,8 +20,8 @@ This section addresses the usage of the
 
 #### Preparing TensorFlow Models for the AI HAT+
 
-For neural networks to run on the Hailo AI module and the AI HAT+ they have to be converted to the
-`.hef` format.
+For [neural networks](/wiki/neural_network.md) to run on the Hailo AI module and the AI HAT+ they
+have to be converted to the `.hef` format.
 This section assumes the neural network is using
 [TensorFlow](/wiki/programming_language/python.md#tensorflow) and is available as a `.tf` or
 `.tflite` file.

wiki/nativefier.md

@@ -4,8 +4,7 @@
 apps from websites.
 This way a single website can be used as an application in contrast to opening it in a
 [browser](/wiki/web_browser.md).
-It uses [Electron](https://www.electronjs.org/) which in turn uses
-[Chromium](https://www.chromium.org/).
+Nativefier creates [Electron-based web-apps](/wiki/electron.md).
 
 ## Setup
 

wiki/neural_network.md

@@ -0,0 +1,32 @@
+# Neural Network
+
+A neural network - often shortened to NN - is a computational model which is part of so called
+artificial intelligence.
+
+## Useful Tools
+
+There are some useful tools to use with neural networks.
+
+- [Netron](https://github.com/lutzroeder/netron) is a open-source and self-hostable tool to
+  visualize neural networks.
+  It is also easily available from the [official website](https://netron.app/).
+
+## Frameworks
+
+The following is a list of frameworks to design or run neural networks.
+
+- [PyTorch](/wiki/programming_language/python.md#pytorch)
+- [Tensorflow](/wiki/programming_language/python.md#tensorflow)
+
+## Neural Network Accelerators
+
+Neural network accelerators are devices to run neural networks by inference.
+The following is a list of possible devices.
+
+- [Raspberry Pi AI Hat+](/wiki/linux/raspberry_pi.md#ai-hat) is a standalone accelerator which
+  directly attaches to a [Raspberry Pi](/wiki/linux/raspberry_pi.md) via the GPIO header.
+- [ESP32S3](/wiki/microcontroller.md#esp32) is a self-contained microcontroller by Seeed with
+  integrated AI acceleration.
+  It does not need an external connection and is especially useful when a small form-factor is
+  needed.
+- Google Coral Edge TPU is a USB-connected accelerator that is not embedded in the host system.

wiki/programming_language/python.md

@@ -96,7 +96,7 @@ Using `md` in the `--to` option the notebook can also be converted to a
 [markdown](/wiki/markup_language.md) file and back.
 
 Alternatively [notedown](https://pypi.org/project/notedown/) can also convert to markdown using the
-following commands. 
+following commands.
 `<output-file>` is the path to the output file again without the extension.
 
 ```sh
@@ -162,6 +162,8 @@ This flag is to be used with care.
 ### PyTorch
 
 This section addresses the [PyTorch module](https://pytorch.org/).
+Pytorch is a machine learning resource which is often used for
+[neural networks](/wiki/neural_network.md).
 
 #### Setup Pytorch with Cuda for GPU usage
 
@@ -190,6 +192,8 @@ This should give back `True`.
 ### TensorFlow
 
 This section addresses the [TensorFlow module](https://www.tensorflow.org/).
+Tensorflos is a machine learning resource which is often used for
+[neural networks](/wiki/neural_network.md).
 
 #### Basic Usage of TensorFlow
 

wiki/signal.md

@@ -2,6 +2,7 @@
 
 [Signal](https://signal.org) is an encrypted, open-source messenger that allows voice and video
 calls as well as instant messaging chats.
+ahe desktop client comes in the form of an [Electron based-app](/wiki/electron.md).
 
 ## Usage
 

wiki/thunderbird.md

@@ -94,3 +94,29 @@ By default Thunderbird will show a preview for mails on the right hand side when
 This is called the message pane.
 It can be hidden by drag and drop or by pressing the F8-key.
 Using the same key it can also be shown again.
+
+### Downgrading Profile
+
+Sometimes - mostly for [troubleshooting reasons](#troubleshooting) - it can be useful to downgrade
+Thunderbird (for example using
+[downgrade](/wiki/linux/package_manager/pacman_and_aur.md#downgrading-packages) on
+[Arch Linux](/wiki/linux/arch-linux.md)).
+If this is done the profile will not be downwards compatible by default.
+On [Linux](/wiki/linux.md) systems the following command can be used to safely downgrade the
+profile.
+
+```sh
+thunderbird -profilemanager --allow-downgrade
+```
+
+## Troubleshooting
+
+This section will focus on errors and the fixing of errors of Thunderbird.
+
+### Not Displaying Profile Images Correctly
+
+On version 145 of Thunderbird the profile pictures of contacts from a CardDAV-synced addressbook
+may not be correctly displayed.
+This bug was reported by [Andrewhotlab](https://bugzilla.mozilla.org/show_bug.cgi?id=2001944).
+An easy fix for this and similar bugs is to [downgrade Thunderbird](#downgrading-profile) to the
+last version which was not affected by the bug.

wiki/youtube.md

@@ -9,9 +9,10 @@ including subscriptions.
 
 - [Invidious](/wiki/invidious.md) is self-hosted and provides a cross-platform web service.
   This frontend allows the usage of [SponsorBlock](#automatically-skip-sponsorships).
-- [FreeTube](https://freetubeapp.io/) is a alternative frontend that provides a local desktop
-  application for [Linux](/wiki/linux.md), Mac and [Windows](/wiki/windows.md) systems.
-  This application has [SponsorBlock](#automatically-skip-sponsorships) built in.
+- [FreeTube](https://freetubeapp.io/) is an alternative [Electron-based](/wiki/electron.md)
+  frontend that provides a local desktop application for [Linux](/wiki/linux.md), Mac and
+  [Windows](/wiki/windows.md) systems.
+  It also features [SponsorBlock](#automatically-skip-sponsorships) by default.
 - [NewPipe](https://github.com/TeamNewPipe/NewPipe) for [Android](/wiki/android.md) phones is an
   application that is available via the [F-Droid Appstore](/wiki/android/f-droid.md).