Remove some useless includes from the launcher
See merge request OpenMW/openmw!775
(cherry picked from commit a84bd643b334eb6ac715681c497184ac22212ced)
d3fff8cf Remove some useless includes from the launcher
1. Show a "bouncing ball" Progress bar when importing from morrowind.ini.
2. Removed dialog that asks for content list name when import game files from morrowind.ini. Instead, name is time stamp.
3. Removed commented out code.
4. Additional bugfix. No longer create a empty content list when OpenMW.cfg has no content files.
I took the liberty to add accessor & mutator functions for classes ContentListsGameSettings and LauncherSettings , as existing code can reverse order of entries.
Also replaced some "magic strings" with named constants.