tigefa4u projects Trac

Don't apply wiki formatting to the ticket summary in the timeline. Closes #1888.

Remove support for [wiki:TracIni trac.ini] configured plugins. Plugins must now be deployed as Python Eggs. (See also TracDev/PluginDevelopment).

Fix regression in notification mail formatting introduced in [2123] (I hope).

Help the garbage collector a little.

* Update/cleanup `INSTALL` file
* Remove stale Docbook version of the TracGuide

TracDiff: merged with trunk (log:trunk#2089:2138)

Links like `source:#1` and `log:#1:3` should be equivalent to `source:/#1` and `log:/#1:3`

Show resolution for ticket closure event in timeline.

Set correct mime-types for gifs and pngs.

Added an option for not highlighting CamelCase links when the targeted pages are missing.

However, the link is still shown as missing if the CamelCase link
is enclosed in a description (e.g. `[wiki:DocumentThis To be documented]`
or even `[wiki:DocumentThis]`).

The behavior is made consistent for all the wiki rendering.

For enabling this feature, add the following to the [wiki:TracIni trac.ini]:
{{{
[wiki]
ignore_missing_pages = true
}}}

Should close #476.

''This changeset is dedicated to Pierre Brengard''