Bring icons back

Set default collision mask for gears at currenthedgehog X/Y to FF7F, expose mask to scripting as well. This should resolve the collision part of bug #420

Further work on moving to players list model

Simplify file loading procedure

Start moving to players list model.

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- Fix warnings and hints - Hide "Converting the operands to Int64 before doing the add could prevent overflow errors" kind of hints as pretty useless and annoying

Show more statuses in icons. Need further work: - Better icons (specially registered vs unregistered) - Share information between chat widgets (now room widget can't show registered status because recieves events for users when user list is empty)

Move hedgehog's step routine into separate function, use it in both hedgehog and ai code

use cmake OPTION for arguments and further cleanup on CMakeFiles

revert since I didn't quite get this working smoothly enough. was close though. perhaps some other time. Shame because calling game tick less frequently can save a lot of CPU

Fix some hints

Shutup pas2c

vector2Angle function which converts vector to angle from -2048 to 2048

Always run simple game on medium maps

Oops