Fix nested route group namespaces

Signed-off-by: Daniel Bøndergaard <danielboendergaard@gmail.com>
Update Route.php
Update Route.php
Merge pull request #5132 from gayanhewa/patch-1

Ignore white spaces when adding multiple filters to routes
Allow where clauses to be passed in action array.
Change order of methods.
Properly support Route 'where' constraints on a Route group.
Merge pull request #4468 from danielboendergaard/routing-group-fix

Bugfix for nested route groups using namespaces
Merge branch '4.1' into 4.2
Removed trailing whitespace from route
Merge branch '4.2' of github.com:laravel/framework into 4.2
Removed extra new line
Fixed routing docblocks
Small tweaks for methods that called often during application boot. For default Laravel application with 100 routes these tweaks eliminates hundreds of unnecessary calls. As a result execution time reduces significantly. I got more than 15% however independent measurement would be highly appreciated.
Merge pull request #5145 from EvgenyKovalev/4.2

Performance tweaks