tigefa4u projects Trac

Convergence of the ''history view'' for Wiki pages and Tickets.

datetime fixes:
- use more user-friendly titles for Timeline links (both for timeline: TracLinks and dateinfo ones)
- use more dateinfo links in the templates, in particular in the Ticket change history (fixes #4756)
- fix precision of `timeline:` TracLinks (the optional Z... part should be cut off)

Also related to #2182, as it anticipates the use of a 'datefmt' user setting.

TracTimeline navigation fixes:
- use the request's timezone for defining 'today' (#4758)
- keep the current ''daysback'' parameter in the navigation links
- fix the check for the ''Next period'' link (#4757)

Thanks to Sergei Haller for reporting those issues and providing a patch for #4757.

The ticket and wiki diff view are now using basically the same diff_view.html template. The wiki_diff.html template is only there to conditionally add a form to the generic one (as this was the only [diff:trunk/templates/ticket_diff.html@...//trunk/templates/wiki_diff.html@... difference]).

Even more convergence between the Ticket and Wiki diff views.

Getting some more convergence between the Ticket and Wiki diff views.

revert r4759's reversion or r4665 (fixes #4744)

The Context.resource property getter was somewhat flawed, as a new resource was always recreated. Fixes #4745.

revert r4665 since it actually breaks the unit tests instead of fixing them

Ported r4757 to 0.10-stable