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

[deadlocker8]

• README
• wiki
• used libraries (about page)
• screenshots
  • account: new field for description #765
  • account: new field for end date #764
• what's new dialog

[deadlocker8]

✨ New features

• new settings option to define how transation name suggestions are ordered (alphabetically or by frequency of use) transaction name suggestions: sort alphabetically or by number of usages #760
• it is now possible to specify a description for each account account: new field for description #765
• it is now possible to specify an end date for each account. A reminder will be shown once per day if one or more accounts will reach their end date soon. account: new field for end date #764

✏️ Improvements

• updated dependencies update dependencies #757

🐛 Bugfixes

• fixed a bug that prevented to select the correct columns during csv import if the csv has fewer rows than columns CSV Import: Column count validation failed #766

⚠️Deprecations