Localchat is now fully operational

Localchat now works properly and as it should, with /w (whisper) /y
(yell) // (ooc) /ooc (ooc alt) (fixes #32). The cost of shop-bought
items can now be set in the GUI next to quantity (fixes #82). Changed
some strings to say job instead of class/team (fixes #92). Merged
sv_shipments into sh_shop. Max quantity is now a setting along with max
cost multiplier. Made improvements to !demote. New settings for whether
an admin can be demoted (admindemote) and whether an admin can force a
demote or use the voting system (adminvotedemote). Fixed minor bug in
RP:ResetSettings which would not delete old removed settings.