UIFR-131: ConceptNumeric passed as FragmentParam becomes plain Concept
Merge pull request #20 from rowanseymour/conceptnumerics

UIFR-131: ConceptNumeric passed as FragmentParam becomes plain Concept
UIFR-128 Invalid the users js + css cache when js and css files are updated
UIFR-128 Fixed tests
RA-156 Added urlBind
Added a toString() for slightly improved error message in one case