[RCD] Roundcube Framework

Besides the new skin in 0.8 I'd like to start working on Roundcube Framework. It means Roundcube will provide a set of classes that can be used by other projects. Now, rcube_imap_generic class is known as one of the best IMAP handling classes, but there are people that would like to use something more abstract i.e. rcube_imap class. This is not simple now because of its dependencies.

So, here are some steps I want to make:

• create abstract rcube_storage class and build rcube_imap as

rcube_storage implementation (driver) - this is to allow creation of other drivers, e.g. SQL-based, POP3,

• exclude mime related functions from rcube_imap into new rcube_mime class,
• split main.inc and rcube_shared.inc functions into a few classes:

rcube_converter, rcube_ui, rcube_utils and maybe some into existing classes,

• create rcube_framework class, that can be a parent for rcmail class,
• framework-related changes to existing classes, e.g.
  • get rid of $rcmail object usage in classes,
  • can we exclude rcube_user class?
  • make output/html/template classes optional,
• unify codestyle according to our CS ruleset