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**Improvements**
- [All] don't limit size of application log, github backend will upload it as an anonymous gist
- [All] split review dialog into two tabs: "General" and "Log"
- [GitHub] add option to save user name only
- [GUI] allow to use TAB to change focus of input text area (do not insert a \t anymore)
- [GUI] allow the user to press Ctrl+Return to accept a dialog
**Fixed bugs**
- fix segfault with PyQt 5.6 on Plasma 5.6.1
- fix a few minor GUI issues (unaligned labels in gh login dialog, fix missing dialog icons, remove unused help buttons from dialogs)