tigefa4u projects Trac

WikiContext: don't store a reference to the db handle in a context.

While convenient for access, I'm afraid that this goes against the #3446 goals (short-lived transactions).
Also, in 0.12 there will be most probably an improved API to access the DB from the environment, either for reading (directly get a cursor) or for writing (transaction support).

Follow-up to r5388, properly format the Timeline event provider failure message.

Be more robust when rendering wiki text containing changeset TracLinks (for example, this can cope with the repository being unavailable).

Follow-up to r4935: that fix should have been IE specific.

Basic support for annotated patches. We basically just show the comments made before each file in the patch. This is especially useful with exported mercurial changesets, or git patches.

An exception raised during the rendering phase (e.g. wiki formatting) would be reported by the error.html template but without the default styling. We make sure to restore the links them if needed.

HTTPException had issues with Python 2.5: we happened to use the `.message` property to store our error message, which could eventually be some markup. This got overriden by the `.message` property of `BaseException`, introduced in 2.5.

Fixes #5066.

Ticket #2821: Merge 5386,5388-5389,5391-5392 from trunk.

0.10.5dev: ported r5392 (''fix writing of trac.ini.sample, #5303'')

Write the `trac.ini.sample` using the same method as the one used for writing `trac.ini`, so that the ordering of their content is kept the same, which facilitates comparison and diffing. Thanks to techtonik for the patch. Fixes #5303.