Datatype field directives

added fields for datatypes and a filter for column names
Added loading icon and field directives
Added ref picker
made ref and multiref picker
fixed bug in api

m-1 relations exported as array instead of object and keys were not
prettyfied
fixed bug in field directive

undefined data stopped the field from compiling new field
renamed concepts

tables to types and rows to entities
Added datetime and date fields
included origin in webServiceApi callbacks
updated bower file