Stats: some css refactor

	- Added unsemantic grid
	- Added some base styles, and improved some other ones
Stats: more frontend changes...

	- Added content item module
Stats: markup changes

	- Improves the markup of the content area
Stats: fixes

	- Now the sass manifest imports the correct unsemantic version
Stats: removed a useless comment
Tooltips: first implementation of the tooltip plugin, waiting some refactor
Tooltips: added english as a default language
Overrides: added titleize and capitalize functions to String prototype
Stats: new functionality, code refactor

	- Moved the health status to a new module
	- Added missing data
Stats: Modified the cluster template to allow include external views content
Stats: configuration view

	- Added a configuration view, child of the node settings view
	- Now the childs views are in charge of render the tooltips