Resolved MM tickets

Sorry, our masters still seem to differ by quite a few commits (or otherwise I'm getting confused by git again), for the following tickets:

 * BB-1298 (contact form not working in firefox)
 * BB-1273 (donors not visible in result phase)
 * BB-1269 (external banners, project iframe view)
 * BB-1098 (metatags, description, title)
 * BB-1034 (view organization documents in back office)

Other pull requests will be done via separate ticket branches.