basic code editing funtions are working

LuaContainer
 - removed itemAt()
 - added begin() and end()

Lua4RSWidget
 - added edit/delete/save/new code
 - added code to interact with UI elemts
added LuaContainer API code
 - hiding LuaCode and LuaConfig completely

started to replaced std::string with QString (to be continued)
forgot these
Merge remote-tracking branch 'hlt/master'
LuaBridge test
Revert "LuaBridge test"

This reverts commit 8f92c001b994cb1cc00734a87656fbc0f2590273.
Merge remote-tracking branch 'hlt/master'
Trigger folder added. Trigger classes moved