Merge the browser-quickjump branch

[cboos]

I think the VcRefactoring/BrowserQuickjump branch is now ready for integration.

This branch adds the possibility to have a list of preselected paths where you can easily jump to, in the TracBrowser.

For example, with the Subversion backend, you can specify the following configuration options:

[svn]
branches = /trunk,/branches/maintenance/*,/branch/test,branches/experimental/*
tags = /tags/maintenance/*,/tags/milestone/*

By default, the preselected paths are the traditionally expected ones: branches = /trunk,/branches/* and tags = /tags/*.

But this will be even more handy for people having lots of branches which are sometimes deeply buried in the hierarchy ;)

For TracMercurial, this will give the ability to jump to known tags and branches.

Diff of the changes: diff:trunk@4320//sandbox/browser-quickjump@4326

[cboos]

Branch merged in trunk in r4438.

I've modified the description to reflect the current convention for the new TracIni entries [svn] branches and [svn] tags.