tigefa4u projects Trac

WorkFlow: When an ITicketActionController modifies a user-modifiable ticket
field, previewing the ticket will create a conflict between what the code sees
as a user change and what the ITicketActionController is trying to do. So,
this changes the behavior to make the ITicketActionController override user
inputs. This is still sub-optimal.

WorkFlow: Rename apply_ticket_side_effects to apply_action_side_effects.

TracBrowser: final tweak to the alignment of the expander icons

TracBrowser: further simplifications of the expander.

TracBrowser: expansion of an empty folder leaves an ''(empty)'' indication (Nautilus style...)

TracBrowser, when re-expanding a folder after a collapse, restore the exact expanded/collapsed state of the entries of that folder as it was before the collapse.

This was indeed a bit trickier to do than the initial approach done in [5338]: we now store the folder ids as <tr> ids and use a user-defined node property to store the list of the ids of the rows corresponding to the folder's entries (`_entries`).

If a ticket description was changed but nothing else the notification mail didn't include the name of user behind the change.

Trac error template: add user agent and jQuery version information.

The jQuery version information is also added to the About/system information data for good measure.

Trac error template:
- fixed validation issues (all but ''<ol> has not start attribute'' which is there to stay, I think)
- fix a CSS issue with IE, error message would be covered entirely by the horizontal scollbar if an overflow happened

WorkFlow: follow-up to r5337, enable/disable all the action related elements having an id (same idea as in the original r5330).