tigefa4u projects Trac

Depend on latest Genshi release, and configure the HTML sanitizer so that it lets style attributes through again.

Fix ticket model tests broken by [5197] and [5238].

Fix admin tests broken in [5223] and [5243].

TracBrowser, follow-up to r5280: collapsing a folder did only remove the immediate entries, not those from expanded sub-folders.

Minor clean-up and reindent

TracBrowser: folders can now be expanded and folded in place

Update version of JQuery (jquery-1.1.2.pack.js)

Misc: Clean up "set" compat code

Misc: Create a branch for miscellaneous changes.

Improve the milestone creation and update operations.

- it's no longer possible to trigger an internal error when trying create a milestone with a name already in use (fix #3652)
- this error and others are instead presented as warnings, and the milestone editor is shown with the previous content. This is in order to avoid problems like #4100, but for milestones.

I also noticed that the data model classes `.exists` property is a bit confusing as this won't actually check if the object exists in the database. Improvements in this area are still needed (this is related to #4130).