tigefa4u projects Trac

db: Follow-up to [9210], also use a microsecond timestamp for generating notification message IDs. Unfortunately, this will break threading to messages prior to the change, but at least we avoid generating message ID collisions for sub-second changes.

admin: Remove `wiki-macros` on upgrade (or warn if it is non-empty).

Closes #9023.

TracMercurial: add `MercurialChangeset.get_branches()` introduced in r9247.

Related to #8843.

TracTimeline: display branch information for changesets, when available.

Closes #8843.

Follow-up to r9224: changeset search results as retrieved from the repository cache should be displayed as `int` values if possible, otherwise we see the zero padding (and we should really move that implementation to trac/versioncontrol/cache.py)

Follow-up to r9240: also shorten author name for the repository index and the revision log, and also extract ''username'' from ''username@...''.

Closes #8046.

util: Increased the transaction timeout for renames on Windows to 10 seconds.

Related to #8865.

TracMercurial: Converted system information to `ISystemInfoProvider`.

Related to #8908.

env: Added a new interface `ISystemInfoProvider` for components to provide version information of external packages they use. This information is displayed on the "About Trac" page and in internal error reports.

Closes #8908.

Create a new branch for web installer work.