Map groups and build issue fixed

Some people have reported the csgosl freezing when adding a new map group with the +-button. I suspect it's caused by the dialog disappearing on another monitor (or somewhere else) since that would explain the issue. Nevertheless, I've added some code which makes the dialog appear centered on the csgosl window (as it should, not default in tcl/tk). Please try it out.

Fixed a build issue with esl config.

Latest sourcemod/metamod + map group fix

• Upgraded sourcemod to 1.10-6502
• Upgraded metamod to 1.11.0-1144
• Added some guard code when running map with no map groups

New plugin + sourcemod + metamod + fixes

• Added weapon_restriction mod (doesn't work in linux, see separate issue #293)
• Upgraded sourcemod to 1.10-6501
• Upgraded metamod to 1.11.0-1143
• Fixed misc gui issues with the retakes plugins

Misc fixes

• Now properly sets tv_port option as start argument
• New sourcemod option allowbannedinpublicservers
• Upgraded to sourcemod 1.10-6499

Misc map and mapgroups fixes

Maps and mapgroups fixes
- Maps tab: Added workshop id and folder button allowing
  file explorer to be opened in workshop map directory to
  e.g. delete the workshop map. "Refresh maps" afterwards.
- Better handling of deleted/broken maps
  - tweaks to ui selection when a map is deleted
  - automatic removal from mapgroups
    - caused mapchange problems when a deleted map was still
      included in a mapgroup
  - automatic removal of cached image

Fixed fresh install crash

csgosl crashed if fresh installed, fixed.

Maps/Mapgroups reworked

Tabs Maps and Map groups reworked.

• reworked layout, more compact and intuitive.
• better handling of many maps, faster
• now allows map preview pictures to be added/modified via url
• no longer need to restart csgosl to be able to use
  newly loaded workshop maps, just refresh in Maps tab
• map group editor reworked
• misc map group bugs squashed

Fixed workshop map issue + new sourcemod

Workshop maps can now be selected in the map vote and also selected as next map.
Upgraded sourcemod to 1.10-6488.

Public server fix + new sourcemod

Now set the "net_port_try 1" option for public servers
Upgraded sourcemod to 1.10-6484

Fixed automapgroup issue + new sourcemod 1.10 6482

Fixed automapgroup issue + new sourcemod 1.10 6482