Fixes #6820

Readds missing check, makes hoverpods their own mech type and moves them
to another folder.
Fixes turbine computers disappearing when broken/out of power.
adds an ex_act to ore boxes. Explosions no longer del all the ore in a box
Fixes #6822
incorporates Zuhayr's suggestion
Cleans up hovererpod move code, adds ion trails

No need to duplicate the mecha move code when we're only interested in
drifting. The hoverpod also starts drifting when it runs out of power,
now.
Merge pull request #6830 from Glloyd/fixes

Two More Little Fixes
Merge pull request #6823 from mwerezak/hoverpod

Fixes #6820, #6822, adds ion trails to hoverpods.
Map update and removing xenos from being selectable.
Fixes for armor and other things
Merge pull request #30 from jamiedigweed/master

Map update and removing xenos from being selectable.
Merge pull request #33 from Baystation12/master

Fixes
Updated in one commit, yay for github.
Testing config update.
Admin alerts for canisters.
Merge pull request #35 from jamiedigweed/master

I am the master of github
MapMerge fix

Fixed mapname for mapmerge.
MAPPERS, LEARN TO USE IT!
Additional mapmerge fixes, toxins mixing fix.
Merge pull request #36 from W3bster/master

Small fixes
Changes and fixes

- Medical pod fix (http://puu.sh/cpEJx/5e60a87630.png)
- Maint knot fix (http://puu.sh/cpEKG/0a1f6222c3.png)
- Engi Pod Fix (http://puu.sh/cpEMT/c93c7a0521.png)
- Engine Airtight Hatches switch (http://puu.sh/cpEWI/9280894b78.png)
- Moved engine mouse (http://puu.sh/cpF1P/b0108e1ef7.png)
- Fixed various maint access issues (Were maint only, fixed for proper
depts)
- Changed substation access to be engi-only (See code changes)