Added shared (cross-user) cache
Expunge all cache instances in shutdown
Fix washtml test after "unsupported node type" fix
Make possible to disable shared cache
Fix class name
Also display contact properties with unknown subtypes
Require most recent plugin-installer with autoloading issue fixed
Simplify instruction of database initialization for Postgres
Improve rcube_utils::file2class() to not return duplicates
Add more tests for rcube_utils::explode_quoted_string()
Add more rcube_utils tests
Add show_actual_foldernames preference and configuration option.

When enabled this setting shows actual folder names rather than
the localised verions for the four default folders:

$rcmail_config['default_folders'] =
  array('INBOX', 'Drafts', 'sent-mail', 'spam', 'Trash');
CS fixes
Remove (move to bc.php) unused strip_newlines() and strip_quotes() functions
Change show_actual_foldernames to be show_real_foldernames.

Change requested by alec@alec.pl.
Update en_US.inc - typo error (updateerror)

Changed ubable to Unable.
Merge pull request #78 from niladam/patch-1

Update en_US.inc - typo error (updateerror)
Fix connection to posgtres db using unix socket (#1489132)
Fix performance regression in text wrapping function (#1489133) - don't use iconv here
Fixed popup windows size issues, unified sizes