Test using period none for creating new BufferedWriters.

This fixes some deadlocks updating whoosh documents.
Fix crash when the long description file doesn't exist
Remove debug code
Improve error reporting
Move strftime library to commons
Add missing !defaults
Fix problems refreshing the my resources view
Fix problem handling mashups just created using the 'Upload to my resources' functionallity
Remove debug code
Improve exception descriptions
Bump WireCloud version
Convert markdown code to unicode before parsing it through the markdown module
Fix window menu size problems when the content doesn't fit on the screen
Add a new class: SafeWriter. BufferedWritter has demostrated that is not usable for WireCloud
Make parsers behave correctly when passing the minimal required info for widget/operator persistent variables in MAC descriptions
Improve minimal endpoint MAC description info tests
Remove unused code
Conserve aspect ratio for catalogue images
Add Pygments to the dependency list as is needed for the codehilite markdown plugin
Fix missing imports