* implement set videomode via json api
* refactor grabbers:
- new base class
- move shared code to base class
* fix osx
* rework all cmakelist files with auto file collection. except leddevices (need further restructuring)
* store current video and grabbing mode
* add json stuff
* remove grabbingmode - we do not want to expose it
* std::string -> qstring part 1
* more string migration
* more string migration ...
* ...
* more qstring mogrations
add sysinfo via json
* remove unneccessary includes
* integrate sysinfo into webui
redPanther
poljvd