Allows the sliding of pipework along floors

Allows pipes to be slid along the floor, not only does this make laying
pipes easier, but you can now lay pipes under machinery without having
to remove them.
Longer time taken to drill a pipe through a r_wall

Added a message too to the driller that it's going to take a while.
Some fixes and changes

To xenobio and hydro and research outpost
Fixed:
- That maint door in robotics mech bay not working
- a missing distro pipe outside of hydro
- the isolation 2 chamber lever on research outpost
- removed a weird disposal pipe in xenobio that wasn't connected to
anything

Changed:

- Hydro is no longer GMO. Removed the genetics machines and re-added
biogenerator, moved things around a little, and added two emergency
lights because plants can die from lack of light now.

-Xenobio now has a little offshoot for plant research. Contains all the
tools they should need and a few trays, a set up isolation chamber for
when Zuh eventually adds plants that actually use different atmospheres,
and the genetics machines. Also has a hilarious view of virology and
maint, as well as an ai blindspot you can conveniently murder people in.

-Removed the reconstitutors from research outpost and put them in
xenobio. Fossil processing will happen in there now assuming
reconstitutors actually get fixed to work (I have a fix mostly done but
there's one outstanding bug I need to figure out yet).
Merge pull request #353 from Bone-White/master

Slide pipes along floors
Merge pull request #354 from Midaychi/xenoflora

Some fixes and changes
Stun revolver rebalance. 25% more powerful than regular taser. Lost it's insta-stun
Merge pull request #1 from ZomgPonies/master

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