UpGun technical changes 2.7.0.0d

Hey!

Thanks everybody for your support, here are some bug fixed :

• Shooting a dead player with the Shrapnels skill won't deal damage anymore.

• The homing indicator will now disappear if you unequip the related skill.

  • I also refactored and improved that code, the indicator will be far more reliable and performance friendly.

• Eliminating yourself in the Gun Game gamemode will now substract points from your score.

• Fixed invincibilty exploit when unequipping the shield skill.

• The notification thing on the Customisation button persisted sometimes.

• Fixed an UI animation deforming the friend invite button.

• Added a beta indicator to the title screen when the game is in a beta version.