Bugfix update

Update contains mostly bugfixes:
* Fixed occasional crash during tongue elongation/contraction (that is the one @StepS had I assume)
* Fixed crash on Safari due to missing Vorbis support (now it runs but without sound)
* Fixed collision with newly placed projectiles
* Consume F-keys, so pressing F5 does not reload the page anymore (where possible)
* Controls: reverse swing direction when upside-down
* Increased network buffer size by 50% to reduce interruptions on bad connections
* First iteration on Tongue Training game mode