Merge pull request #766 from chrox/master

add OTA settings for server mirrors and channels
Add some parameters to define the search
Register search to the filemanager menu
Search Calibre metadata to open a book
Merge pull request #768 from WS64/master

Search calibre data to open a book
Search for metadata.calibre if not found by user input
Merge pull request #769 from WS64/master

Search for metadata.calibre if not found by user input
progressbar can be turned off in mini bar
Default = progressbar visible
Merge pull request #770 from WS64/master

Progressbar can now also be turned off in mini bar
Add missing quotation marks in example and add option to turn on/off chapter markers in mini progress bar
Add chapter markers
Send TOC parameters to progressbar
Added complete unichar support
Merge pull request #776 from WS64/master

Add full unichar support for search and chapter markers in mini bar
no need to translate trademarks v2
update pot file
Add Umlauts to Keyboard
Merge pull request #777 from WS64/master

Add Umlauts to Keyboard
Update main.lua