Fix badly placed entities in several maps
As a result of xonotic-data.pk3dir!1234 (merged), misplaced map entities now trigger warnings when a map is loaded. A few examples:
[::SVQC::WARNING] DropToFloor_QC at "-1145.22 -810.076 384": FIXED badly placed entity "item_cells" before drop
[::SVQC::WARNING] DropToFloor_QC at "-1145.22 -810.076 384": COULD NOT FIX stuck entity "item_cells" after drop
[::SVQC::WARNING] DropToFloor_QC at "-736 -864 160.111": FIXED badly placed entity "item_flag_team" before drop
This MR fixes entity positions where necessary (and sometimes deletes them, see Bromine) to get rid of these warnings.
This applies to Bromine, Erbium, Courtfun, Geoplanetary, Glowplant, Implosion and Vorix.
Solarium was fixed separately in the pending-release
branch.