tigefa4u projects Trac

add `separated` function for augmenting sequences with a separator token, or `None` on the last item and use it in the `query.html` template

Follow-up to r4406: forgot to rename one occurrence of `date` to `change.date`. Fixes #4420.

TracMercurial: let the oldest_rev be the nullid

TracMercurial: ported r4465 from the 0.11 branch

mimeview fix: pygments_renderer change to support rework in Pygments:changeset:2479 -- closes #4421

TracMercurial: a few error handling improvements
- don't give an internal when browsing an empty revision (fixes #4410)
- correctly show the oldest revision to be the nullid in this case
(viewing the nullid revision requires either the r4464 fix or having a non local timezone set)
- use !NoSuchChangeset and !NoSuchNode exceptions where needed
- bumping the revision number from 0.3 to 0.11.0.1

datetime fix: make the !LocalTimezone more robust when old dates are specified.

* add PERMISSION_GRANT and PERMISSION_REVOKE permissions for the permission
admin panel
* users with PERMISSION_GRANT are only allowed to grant permissions they have
themselves to other users

In TracQuery, fix the initial value and the tests for radio buttons used for boolean fields. Fixes #3771.

Follow-up to r4451: I forgot to merge up to r4442 when integrating the WikiContext branch... stupid, really. Fixes #4411.