added make version command

to quickly set the mods version to the git tag
or git-$hash if we are on a development version
Tanks' ROF increased
Increased ROF of tanks. The guns of Light & Medium Tanks are a bit weak
relative to their role as tanks. They do less damage than bike rockets,
and do less damage against light vehicles than even the hum-vee. Changing
ROF should mitigate this a bit, even though their gun is still not that
powerful (e.g. compared to stealth tank, and even flame tank matched light
tank). The fact that their rivals are often moving fasts also complicates
the slower ROF.

The same proportion of damage was kept between light & medium tanks.
Mammoth Tank was left unchanged.
Merge pull request #3140 from psydev/bleed

Tanks' ROF increased
Added missing target line for DemoAttack

fixes #3122
Remove alt key modifier from build palette hotkeys. Changed some hotkeys for units and buildings.
Change soviet buildings BuildPaletteOrder to be consistent with allied buildings
Move flamethrower and shock trooper BuildPaletteOrder values around
Merge pull request #3147 from Mailaender/demo-flash

Added missing target line for DemoAttack
Merge pull request #3150 from cjshmyr/hotkey

Hotkey changes
Fix assign teams dropdown position.
Remove ICMP based pinger
Reimplement pinging via the orders channel.
Clean up lobby logic and visuals.
Remove obsolete Random Map button from d2k lobby.
Merge pull request #3158 from pchote/diy-pings

Rewrite ingame ping implementation.
More robust replay file creation
Merge pull request #3074 from Mailaender/make-version

Attempt to unify versioning with downstream
Undock harvesters when refinery is destroyed or not in world

fixes #2029
Give the mechanic a wrench icon instead of red-cross

closes #3133

don't try to guess hard-coded cursors from weapon damage
Implement new spawn tooltips in RA and d2k.