Refactored RouteResolver so it would allow for the loading of entire
component sets.
Added HoverIntend Directive
Added Youtube Directive
Moved Header less files to the header components directory
Minor changes
Added Header Set, which defines dependencies of the 
header component

Unfortunately, the header component cannot be lazy loaded via
the RouteResolver, because the header is directly included in the
index.html and therefore compiled before the StateManager kicks in.
Added Coverage Data