Added accordion to import/export dialogs in content editor.
Fixed bug in content editor when changing an id of a phrase.
Made editor tabs closable with escape key.
Split the item tileset image into several smaller parts.
Added more images for some armours, weapons and monsters.
git-svn-id: https://andors-trail.googlecode.com/svn/trunk@155 08aca716-68be-ccc6-4d58-36f5abd142ac