tigefa4u projects Trac

Follow-up to r4632, which was returning an UTF-8 encoded string, and we need `unicode` here.

The !SubversionPropertyRenderer now copes with empty lines in `svn:externals` properties. Fixes #4672.

replace r4686 using the `__getitem__` method as a better workaround for Genshi problems with the slice syntax

Follow-up to r4682, must test that we're dealing with the appropriate kind of change.

Work around usage of string slicing in template, which requires Genshi 0.4dev. Fixes #4647.

Fix typo present in wiki and ticket history templates. Closes #4649.

Minor refactoring of macros, standardize on using ''tag'' instead of ''html''.

!TitleIndex macro: add a `depth` parameter, for not showing pages that are deeper than a given level in the hierarchy.

- `0` means pages at the same level as the given prefix
- `1` means one level deeper than the given prefix (etc. for higher numbers)
- `-1` means any depth

Examples:
{{{
[[TitleIndex(PageTemplates/, depth=0)]]
}}}

This will list the immediate children of PageTemplates (note that "/" was part of the prefix).

{{{
[[TitleIndex(PageTemplates, depth=1)]]
}}}

This will list the immediate children of PageTemplates and PageTemplates itself.

Implements #4653.

In the TracChangeset view, each title of a diff view links to the corresponding restricted changeset, instead of going to the latest revision of that file in the browser.

There are still two other ways to go to the latest revision of that file (from the corresponding '''Files:''' index entry and from the link attached to the newest revision itself, in the diff view itself.

Implements suggestion 2. of #3398.

A batch of minor improvements for the TracTimeline:
- add navigation links (''Previous Period'' / ''Next Period''), with the ''period'' corresponding to the number of days back. Fixes #215.
- show ''Today'' and ''Yesterday'' annotations for the corresponding days. Fixes #2676.
- make the preferences box a bit narrower. Fixes #1013.