Update jquery-ui to full 1.9.1, and include smoothness theme

This allows other apps to use a single version of jquery-ui that is
known to be compatible with Mezzanine's version of jquery.

This is jquery-ui-1.9.1.all, so all widgets are available and no
additional jquery code is needed. Also, the full smoothness theme
is included. Third-party apps may include other themes.
Added Django < 1.5's adminmedia tag lib for 1.5 compatibility.
Clean up dev server check.
Allow category/tag titles to be used in blog_post_recent tag.
Merge
Bump grappelli safe version to 0.2.11
Bump filebrowser safe version to 0.2.13
Added the setting UPLOAD_TO_HANDLERS for configuring the upload_to arg per file field. Closes #480.
Added Google VetNet to sites in README.
Added missing word in Blogger import notes
Change feedparser URL to authoritative fork

 - The original author's website(s) returns HTTP 410
 - Refer to:
     http://en.wikipedia.org/wiki/Mark_Pilgrim_(software_developer)
Resolves html entity output re: #482
Merge
Generate better meta descriptions from markdown content.

By using the newline character as the first pattern in the generation of the meta description, markdown content (which normally lacks closing `</p>` tags) is processed correctly.
Parse content with rich_text filter.
Moved import inside method.
Added 1800RESPECT.org.au to list of sites.
Adds a few new Mezzanine-based sites to README
Fixed project template VCS ignore files to not ignore static files within apps.
Add new third party library for easy slides.

Created this because and use it on a few sites already and wanted
to share, quite a few of my clients love this functionality.

https://github.com/overshard/mezzanine-slides