Open sourcing Social Photos: First commit
Updating README
Update README
Fixing bug in sanitizing filenames

Adapting code from a stackoverflow answer to sanitize filenames.
major changes

* add config mechanism for easier development and deployment
* add .gitignore
* remove stale .svn folders
fix takeout session_* deprecations
Update flickr end points to https
Update flickr end points to https
Move takeout email password to config file
Add stats.php to .gitignore