tigefa4u projects Trac

Close the attachment file before notifying listeners about the added attachment.

This facilitates the work for some plugins that need to reopen the file.
Patch by anatoly techtonik, thanks!

Closes #7978.

Fix css style for headers within a wiki page, as the current rules didn't play well with embedded divs.

Closes #7970.

Add a hint for saving the email or username in the preferences.

Closes #8000.

MultiRepos: whitespace fix for r7814

TracMercurial for 0.11: ported r7816 from 0.12 branch of the plugin

TracMercurial for 0.12: adapt to Mercurial API changes
- hg:08cabecfa8a8 ''errors: move revlog errors''
- hg:1d54e2f6c0b7 ''error: move repo errors''

(3/3) MultipleRepositorySupport branch synced with trunk [7684:7811/trunk] - other, non-conflictual changes

(2/3) MultipleRepositorySupport branch synced with trunk [7684:7811/trunk/trac/web/chrome.py] - there was an actual conflict resolution there (authorinfo vs. show_ip_addresses, taken both)

(1/3) MultipleRepositorySupport branch synced with trunk [7684:7811/trunk/trac/locale] - boring locale stuff first, don't look at this changeset...

More docs.