All changes to the adapter are cumulative.

Also fixed a couple of bugs.

This way the forum and private group client do not need to keep track of
message timestamps themselves and do not need to interact with
post/message factories.

Also made some listeners volatile.

and maintain keyboard state when hiding view.

Fixes #531, #532

Fixes #373

This commit also moves various blog classes into their own packages and
makes the required visibility changes.

in group metadata to be able to speed up group listings.

Closes #584, #586, #585