tigefa4u projects Trac

0.11.6dev: try harder not to get annoying tracebacks due to client disconnect.

On Unix, the exceptions correspond to EPIPE errors, and on Windows to:
- error: ![Errno 10053] An established connection was aborted by the software in your host machine
- error: ![Errno 10054] An existing connection was forcibly closed by the remote host

Closes #8582.

TracRevisionLog: CSS tweak to get the ''View changes'' button closer to the following table, for a better visual association when there are multiple ranges.

TracRevisionLog: show distinct revision ranges in separate tables, so that one can't generate diffs including changes from revisions outside of the given ranges.

Related to #8349.

TracRevisionLog: when displaying multiple ranges, produce one separator row between groups.

Related to #8349.

0.11.6dev: produce more standard patches, for the ''Unified Diff'' alternate download format in the Changeset view.

Closes #8573.

MultiRepos: merged with 0.12dev [T8431:8479/trunk]

''sqlalchemy-ng'' branch out-of-sync. If restarted, should be rebased rather than get a huge merge changeset.

Will rebase ''wiki-rename'' branch (#1106)

Removing ''wiki-blame'' branch, as there no other code than the patch in #5821 and a few merges.

''rework-testing'' branch completed, see #8169 and #8170.