Document the location of the plugin in the UI
Add myself to the credits
Fix criterias -> criteria (incorrect pluralism)
Extend and correct form:
 - Add additional criteria types
 - Use correct input types on buttons
 - Fix initial column width
 - Center select in initial column
 - Remove pointless (for search) IMAP flags
 - Group search criteria by context
Add context relevant input enhancements to input field(s):
 - Date type uses jQuery datepicker
 - Email type uses addressbook lookup
 - Flag type removes the input field
Use the local users date format preferences
Add localization strings to system.
This is somewhat ugly, maybe rethink HTML?
Rewrite the finalise_command() function
The rewrite is so that:
 - It is now RFC complient
 - Search queries now match those built by Squirrelmail
Bump version numbers and add myself to 'authors'