refactoring restoreScreenMode from readerview to filemanager
This should fix #983.
Merge pull request #985 from chrox/collapsible_toc

refactoring restoreScreenMode from readerview to filemanager
Bugfix
Merge pull request #988 from WS64/master

Bugfix
fix firewall block of calibre companion on Kindle
don't need to rebuild ota installed package if it's detected
add collapsable TOC menu
don't dim icon button by default
Merge pull request #990 from chrox/collapsible_toc

add collapsable TOC menu
fix(imagewidget): error out on invalid file path