Area and line attack added

Press A for area attack. Click anywhere for the attack to happen there.
Press S for line attack. Attack moves out from player in direction of
the click.
Defaults to movement after every click.
Merge pull request #5 from mutface/BurakPod

Area and line attack added
Basic attack

Basic attack framework
added aoe attack from origin player. press d to activate (no mouse required)
line attack and area attack visualization
attack visuals - prefabs needed to be in Resources
with networking mechanism (RPC)
death and respawn at random sparkpoints
added RPC calls for death and respawn
NavMeshAgent fix + missing comments

NavMeshAgent is now stopped in the beginning of MovePlayer function and
reenabled only if Player is actually supposed to move
Merge remote-tracking branch 'origin/BurakPod'