Linker grenade gfx : update the placeholder gfx to a new one based on the symbol made by nexAkari

Signed-off-by: Andrew "Akari" Alexeyew <akari@dbc.1gb.ua>
Removed _placeholder postfix from linker icons
Grenade normal gfx : fixed abusive backlight painted

Signed-off-by: Andrew "Akari" Alexeyew <akari@dbc.1gb.ua>
changed Reflective Shield obituary
Added a postfix for Arc frag messages (someone come up with an obituary for this one please)
separate obituaries for dying from plasmabomb hits and shards
Hitting a teammate with the Translocator while havng the Medic buff will instantly heal them up to the medic health limit as well as cause a teleportation. Hitting a frozen teammate will also instantly revive them.
Fulfilling Akari's wishes
Merge remote-tracking branch 'upstream/unstable' into unstable