Integrate our old plugins into roundcube

[v]

Here are the plugins that were previously installed on our version of roundcube:

bounce
webtools
custom_title
list_commands
login_geoip
reset_prefs
rutgers_status
zipdownload

We need to evaluate which ones of these plugins were actually written by us, and which ones we took from other sources. If they are from a different source, we should find their latest version and integrate that into roundcube without any core hacks as much as possible.