Use a less genericly named global var
scrollTop is a DOM attribute, no need to make a jQuery call to set it.
Move the chat history loader into the chat mgr
Function cleanup

(Possibly doesn't work)
Arbitrarily discard localStorage API in favour of something sucinct
Update rohbot.login for convenience of multi-factor login
Caffinate the rohpod connector
Update login method
Slide the responsibility of looking after logins to a manager
Make sure everything is loaded before rohbotterizing