Updated stringtable.xml with proper German translations
Added localisation to fn_useItem.sqf
Added localisation-strings for fn_useItem.sqf to stringtable.xml (STR_ISTR_*)
Added localisation to fn_setupActions.sqf
Added localisation-strings from fn_setupActions.sqf to stringtable.xml ("Player_Actions" / STR_pAct_*)
Merge pull request #184 from MorpheusXAUT/master

Update German translations and (slightly) expand localisation