Add regexp check on token property setter
Add regexp check on token property setter

Raise an error if the user sets an value that does not verify the regexp
associated with the token.

nabilbendafi/haka,Wingless-Archangel/haka,haka-security/haka,LubyRuffy/haka,lcheylus/haka,Wingless-Archangel/haka,lcheylus/haka,LubyRuffy/haka,lcheylus/haka,nabilbendafi/haka,haka-security/haka,nabilbendafi/haka,haka-security/haka