fixes a couple of found XSS flaws
Minor typo in README for simplepie dependency

Signed-off-by: Dan Scott <dan@coffeecode.net>
Merge pull request #523 from dbs/typo

Minor typo in README for simplepie dependency.
Animate GIF support restored.

Fixes #525
Revised .htaccess that works better on shared hosts
Preventing transparent PNGs from being clobbered
Refs #526: Rewrite corrupted URLs on display.
Refs #526: Applying URL reconstruction to JSON view as well.
Do some sanitisation on some configuration provided data (refs #518 and various others)
Merge pull request #533 from mapkyca/ini-sanitisation

Do some sanitisation on user supplied configuration settings
Fixing URL over sanitization in profile fields
Removed confusing syndication clause

Fixes #535
Fixing flickr (and presumably other) oauth callbacks
Merge pull request #536 from mapkyca/fixing-callbacks

Fixing flickr (and presumably other) oauth callbacks
Removing space in .htaccess
Unthrottling registration pings
Don't save the Known hub to the db
Minor URL change
Callbacks don't ping the hub
Minor hub fixes