Display a warning if some attachments were not saved (#2008).
Moves flash messages rendering to a helper method.
Fixed: syntax highlight doesn't appear in new ticket preview (#1976).
Lower the project identifier limit to a minimum of two characters (#2003).
IMAP: add options to move received emails.
Fix sv lang file
Admin Info Screen: Display if plugin assets directory is writable (#2425).
Merged r2116, r2117 and r2187 from trunk.
Merged r2164 to r2167, r2188 and r2189 from trunk.
Merged r2212 to r2214 from trunk.
