Fixed null flag for cigarette type
Hardsuits

Adjusted hardsuit values to match descriptions a little better. Returned
some atmos hardsuit values to eng ones since they don't seem to have
reduced slowdown after all, instead they trade radiation protection for
thermal protection.
Updated syndie hardsuit species excludes as those species now have their
own syndie hardsuits.
Space suit description text
Fixes for last two commits.
Adds Mentors.

Adds a config option MENTORS which sets the variable config.mods_are_mentors
Adds a rights level of R_MENTOR which gets msay, private message, aghost, notes, and a new proc for checking for new players (requires database support).

If the confic option for mentors is set then

	the ckeys listed in moderators.txt file will instead be set as mentors, you can still make moderators by adding them in admins.txt

	staffwho will show Mentors instead of Moderators as the heading above the listing of non-admins.

Also:  Players now get a message gently reminding them to click the name of the staff member to reply instead of ahelping over and over.
Robots will now take burn damage from appropriate projectiles, rather than recieving brute.
Fixes #3741
Fixes #4495.
Fixes #4421
Fixes #4534
Merge branch 'master' of https://github.com/Baystation12/Baystation12
Replacement dionaea sprites intended to be pushed a long while back.
Merge pull request #4913 from Zuhayr/master

Changeling, nymph and robot fixes.
Merge pull request #4885 from mwerezak/equipment-fixes

Misc Equipment fixes - Mostly hardsuits
Merge pull request #4912 from Ccomp5950/mentors

Adds Mentors.
Merge remote-tracking branch 'upstream/master' into dev