Removing href-tags from log_game in transfer_valve.dm

Not sure I'm doing this the best way, but I couldn't come up with a cleaner way. Suggestions are welcome!
Removing hrefs from log_game in chem_grenade.dm

Fixes #2333
Removing hrefs from log_game in ghettobomb.dm

Fixes #2333
ops
Mineral doors won't close anymore if there's a mob under them. Even a butterfly.
Mineral doors will now update the air when closing and opening. No more magic air shields from here.
Merge branch 'master' of https://github.com/tgstation/-tg-station
Implement an preattack override for your self contained snowflake needs
Remove adjenct check from click,and move it after attack self
Fixed https://github.com/tgstation/-tg-station/issues/761
Standardizes and cleans up objective.dm
Converts Steal objectives (except for blueprints grr) to a datum-based system. This is to support further changes to the objective system, though it does make adding new objectives nice, simple and compartmentalized.
Repurposes the outdated BE_MONKEY into BE_BLOB and seperates the alien and blob pools so people can prefer to be one or the other or both or neither. An annoucement should be made when this goes live so people are aware they have a new flag to set.

Adds a dedicated button on the player panel so admins can easily turn specific players into blobs.
Completes code changes; reimplements ninja steal objective.
Merge branch 'master' of https://github.com/tgstation/-tg-station into objectives
Gets rid of a couple colons.
Fixes #2553 and #2533

Fixes the away map dead slime spawner. Previously, it would spawn two
dead slimes that had living icons. Now it spawns one slime with a dead
icon.  These issues are fixed by adding a check for existing slimes at
the spawner's location before spawning a slime, and killing the spawned
slime via adjustToxLoss() instead of death(). Death() doesn't give the
slime a dead icon for some reason.

Fixes the away map dead AI spawner. Previously, it spawned a dead AI
that showed on the PDA messenger from roundstart, made the AI status
displays on the station show the BSoD, and displayed its laws in the
round-end report. These issues are fixed by setting the spawned AI's PDA
toggle to 1, changing the status displays back to blank after the AI
dies and removing the dead AI from the moblist so it isn't shown at the
end of the game.
Remove Colons From Premises
Fixes thuds in space and hats falling off

Fixes #2550 by adding a check for space turf at the location of the mob
before playing a bodyfall sound

Fixes #2494 by following Carn's suggestion of determining whether a hat
will fall off based on its head cover and head hide flags.

Thank you @Razharas and @MrPerson for help with bitflags.

Thanks @Supersayu for providing a lot of this code.
Merge branch 'master' of https://github.com/tgstation/-tg-station
Bag of holding now holds everything
Increased max_combined to 35