add support to non domain class in <f:all /> tag
add default keys to labels message resolution
add <f:label /> tag, introducing _label.gsp templates similar to others templates
refactory redundant code
fix <f:label /> tag to not need bean object
add <f:value /> tag to display property values, templates _value.gsp, similar to other templates
change <f:display /> tag behavior to act like <f:field /> tag, showing label