Replace all kind of dashes

see https://stackoverflow.com/questions/18234545/replace-all-kind-of-dashes

design_class resolver fix

convert dashes to underscores when checking if design class exists

template updates

remove default limit

Create resolvable_design.php

register asset functionality

Update encode.php

allow null route controller

route return type

getopt_and_operand()

Provides option and operand values using getopt() specifications.