Add some apps, update icons and sort in alphabetical order

[ghost]

FFShare

• [x] Installed and tested by me on my main smartphone and used for about 15 minutes or more.
• [ ] Has dark theme. (Doesn't really matter since you don't use the app directly, but via the "Share" button)
• [x] It has 0 trackers on εxodus.
• [x] It has 0 F-Droid Anti-Features.
• [ ] I use the app on a daily basis and I love almost the entirety of it, so I placed next to it a heart.

MJ PDF

• [x] Installed and tested by me on my main smartphone and used for about 15 minutes or more.
• [x] Has dark theme.
• [x] It has 0 trackers on εxodus.
• [x] It has 0 F-Droid Anti-Features.
• [ ] I use the app on a daily basis and I love almost the entirety of it, so I placed next to it a heart.

Simple Time Tracker

• [x] Installed and tested by me on my main smartphone and used for about 15 minutes or more.
• [x] Has dark theme.
• [x] It has 0 trackers on εxodus.
• [x] It has 0 F-Droid Anti-Features.
• [x] I use the app on a daily basis and I love almost the entirety of it, so I placed next to it a heart.

Other changes

• Updated "Trackers", "Image Processing" and "PDF Viewer" section to be sorted in alphabetical order
• Updated OpenReads icon
• Changed Sobriety link from IzzyOnDroid to F-Droid

[Psyhackological]

Wow!

Awesome PR! Thank you so much, and sorry for such delay. I do not think I have something to worry about merging this. Thank you for your time and effort, my dude!