tigefa4u projects Trac

Be robust w.r.t unset systeminfo values, related to #4545.

Make failures of `IHTMLPreviewAnnotator` more visible to the user

Blame support: get rid of the ugly hack used for getting the correct filename across renames in all blame cells.

Fixed the rendering of the blame view in Internet Explorer. Many thanks to mitsuhiko for suggesting the fix in a split second ;)

display borders between changeset blocks in annotated view

Fix _group_lines for #4336, round two

PermissionPolicy: fix `Context.from_resource`

The Wiki diff view was not working proper as the `WikiContext` was reconstructed from the `page` resource. This worked partially but omitted the version information. So we need a generic way to update the context after a resource is bound to the `Context`.

PermissionPolicy: introduce a `TicketContext`

Plus tweaked the resource description related methods on `Context`:
- `name`, gives a non ambiguous name to the resource targeted by the context; there's no more a ''compact'' optional argument, but
- `shortname`, gives a non ambiguous short name to that resource

PermissionPolicy: fixed the `Context.self_href` to work properly when `Context.version` is used.

Also introduced a few resource description related methods on `Context`:
- `name`, gives a non ambiguous name to the resource targeted by the context
- `summary`, gives a more detailed information about the targeted resource

PermissionPolicy: simplified the `Resource.version` specification.

Now, `None` is used to specify the latest version of a resource, in accordance to existing conventions for Wiki pages and the versioncontrol subsystem.

Also:
- the `__call__` method has been fixed to create Context instances of the appropriate subclass according to the given the `realm`.
- restored the doctests for the Context class.