Various

- Change: Global changes of references from F2 / F2 manual to F3 / F3
manual
- Change: Re-positioned FA platoons and changed FG1 to DT1 (both
factions)
- Change: Fixed minor errors with Group IDs and Group Markers (inc.
small tweaks)
- Change: Cleaned up Mission Header component
- Change: Cleaned up the SQM file mission name and description
- Change: Made Loading Screen component a labelled thing!