sage-dev: add some documentation/doctests
env: fix trac url
sage-dev: cleanup proxy servers
sage-dev: more pythonic TracInterface._password
sage-dev: small cleanup of Config
sage-dev: better password timeout
sage-dev: cleanup request -> single_request
sage-dev: fix authenticated substitution in anonymous proxy
sage-dev: prefer anonymous proxy
sage-dev: inherit from SafeTransport
sage-dev: ticketnum must always be an int