tigefa4u projects Trac

PermissionPolicy: Merged log:trunk@...:4543.

Blame branch: an alternative to r4543 for displaying the age color in the browser in a "light" way.

Blame branch: implement jonas' suggestion to make the color scale less prominent in the browser directory view.

Also, made that feature entirely optional (but enabled by default).
To turn it off:
{{{
[browser]
color_scale = disabled
}}}

Blame: move `BlameAnnotator` declaration to module level so the class isn't reconstructed on every call to `get_annotation_data`

Blame branch: merge with trunk@..., using svnmerge (r4520,4524,4532-4533,4535-4536,4539)

Blame branch: add <meta name="ROBOTS"> header for the browser view, as appropriate.

Follow-up to r4536, fix unit tests. Also took this opportunity to clean up that file which apparently contained 3 times the same content...

Timeline link resolver branch (#975):

This implements a `timeline:` link resolver prefix.
The argument must be a date string in the ISO:8601 format, with at least the year and the month specified.

Besides TracLinks, there are many more ways to go back to the timeline, now: I modified the format_datetime helper function and the dateinfo macros so that we get links to the timeline from various places (e.g. changeset time, ticket created and last modified time, browser age, wiki history, ...).

Also, there are some fine tuning to the datetime utilities in `trac.util.datefmt`:
- the `format_*` functions supports an `'iso8601'` format
- `parse_date` can also understand this format
- fixed offsets timezones are now using strings like "GMT +01:00" instead of the more confusing 'Etc/GMT-1' one (see discussion in #975).

Creating a work branch to finalize #975.

Minor improvement to the `DefaultTicketGroupStatsProvider`: only call refresh_calcs once.