Don't treat links to "#" as "/"

Breaks many places where "#" is placed as a dummy href and are handled through click events. It can be prevented with stopPropagation() but then it won't propagate to its parents. This fixes my case, but i'm not sure if it's desirable for others.
Proper fix
can.string fix getNext function
can.string.deparam fix test
can.sub fix remove param. Allow only to remove properties + tests
can.string getNext add test
Merge pull request #285 from DVSoftware/patch-1

Don't treat links to "#" as "/"
Merge pull request #340 from schovi/can-getNext-fix

Can.string getNext function fix
Merge pull request #341 from schovi/can-sub-remove-fix

can.sub fix remove param. Allow only to remove properties + tests