Fixes #5974

- Fixes possible disappearance bug for Laptops
- Fixes breathing not producing CO2. This applied to humans (untested for other races, but probably the same)
Adds new items. Source: https://github.com/Baystation12/Baystation12/pull/5928
Adds new brig. Source: https://github.com/Baystation12/Baystation12/pull/5928
Merge branch 'dev' of https://github.com/Baystation12/Baystation12 into dev
Fixes being able to use the floor painter through windows, windoors etc.
Fixes not checking proximity argument
Adds the cigar case as a premium vending item

5 may be a bit too much, but who is going to get all those coins,
anyway?
Merge branch 'customs' of https://github.com/Jarcolr/Baystation12 into customs
N2 buildup fix attempt. Putting this into separate commit in case it's not wanted.

- Right now, air consists of 20% O2 80% N2 (approx.). Breathing takes O2 and turns it into CO2. CO2 gets scrubbed. Pressure drops, vents refill with air which again contains 80% N2 20% O2.
- This means that only 20% of breathed-out oxygen is replenished. Rest is replaced by N2. In large areas, such as Bar, with many mobs this can eventually lead to dangerous atmosphere status.
- This fix, while OOCly slightly unrealistic handles this issue by turning both O2 and N2 into CO2. Tested in CE's office with 5 human mobs without active scrubbers. Air lasts for 2~ hrs. Larger areas of course last significantly longer.
removes unused AI text2speech files and code,
saves about 4.5 MB traffic per client.
Diaper back on monkey.
Merge pull request #5954 from Zuhayr/dev

No one is going to read this all anyway
Merge pull request #5930 from Jarcolr/monkey

Removes diaper/onground states from monkey.dmi
Merge pull request #5957 from mwerezak/train-cost

Adjusts train supply costs to make the tug/cart ratio choice more interesting for players.
Merge pull request #5980 from GinjaNinja32/proximity

Fixes being able to use modkits, reagent scanners, and pipe painters through windows/windoors/etc.
Merge pull request #5973 from Walter0o/robot_fix

fixes #5970, prevents bugs in the future
Fixes #5985. Because it was such a minor change I also dirtied down the maintenance tunnels even more.
Fixes phoron reactions with oxygen not following a consistent reaction equation
More proximity fixes