update README, wiki, used libraries, screenshots, whats new dialog

[Robert Goldmann]

• README
• wiki
• used libraries (about page)
• screenshots
  • #765
• what's new dialog

[Robert Goldmann]

✨ New features

• new settings option to define how transation name suggestions are ordered (alphabetically or by frequency of use) #760
• it is now possible to specify a description for each account #765

✏️ Improvements

• text #ticket

🐛 Bugfixes

• text #ticket

⚠️Deprecations