Fix for freezing plasma from chemistry
Fixes R&D machinery materials adding exploit

Fixes https://github.com/tgstation/-tg-station/issues/3259
Made the teleporters (the one with the computer, power station and portal) link eachother at roundstart with initialize(). And also at New() because why not.
If you try to use the teleporter and the teleport was rejected for any reason (like having a nuclear disk), you won't get the chance to get a random damage from the teleport.
Fixes issue #2236.
Removed some spawn() calls.
Removed the chance of fail from the portal effects (the blue portals made with hand teleporters).
The portal datums will now return 0 if the teleport failed, and now use a new proc, start(), instead of New() to handle themselves.
Standarized teleport.dm from the helper_datums folder.
Removed the checks for centcomm z level and away missions z level for teleports. Now you can go there.
changed the /red messages from the teleports datum to span classes.
The "[something] bounces off of the portal!" were replaced for "The portal rejects [something]".
Removed an extra "the" on those messages.
Make violin stop cutting off other sounds
Fixes issue #2316
Mulebots will be able to pick up crates through plastic flaps again.
Span classes yaaaaay
Merge branch 'master' of https://github.com/tgstation/-tg-station into RDfix
Merge pull request #3278 from Aranclanos/Mulebots

Fixes issue #2316 Mulebots picking up crates through plastic flaps.
Merge pull request #3262 from Razharas/RDfix

Fixes R&D machinery materials adding exploit
[CHANGELOG] AI Notifications about Cyborgs
Merge pull request #3301 from Ikarrus/clog1523

[CHANGELOG] AI Notifications about Cyborgs
Update to MiniStation. Replaced the white pod doors with the airlock version.
Merge pull request #3276 from MrPerson/play_me_a_song_piano_man

Make violin stop cutting off other sounds
Merge pull request #3248 from AnturK/nothinglikeasmellofplasmainthemorning

Fix for freezing plasma from chemistry
Merge pull request #3304 from Giacom/open_pod_doors_hal

Update to MiniStation. Replaced the white pod doors with the airlock version.
Merge pull request #3275 from Aranclanos/TeleportersFix

Fixes and some minor changes regarding teleports/portals code.
Больше кривофиксов. Финальная версия, надеюсь
Merge branch 'master' of https://github.com/tgstation/-tg-station