Add ability to add metadataxml to a modifier from within Edit Terms view

The client was updated to allow a user to enter in metadata xml info. The server was updated to insert this info into the db. The client was recently updated to give the correct ValueMetadata <Val description =""> format for Enums and to clean up default parameter issues on the Query Dimensions page (modifier_dimension, etc)

Tested with build 1.7.04.0001. An issue was found when adding enumerated values to the metadataxml for modifiers. The xml that was being created was as follows: <EnumValues>       <Val>AC</Val>       <Val>BID</Val>       <Val>QD</Val>       <Val>QHS</Val>       <Val>TID</Val> </EnumValues> The problem is the description attribute is missing from <Val> and this information is required to display the enumerated values correctly in the Modifier Value window located in the Query Tool view. Example of correct format for the XML for enum values: <EnumValues>       <Val description="Before meals">AC</Val>       <Val description="Twice per day">BID</Val>       <Val description="">QD</Val>       <Val description="Once at night">QHS</Val>       <Val description="">TID</Val> </EnumValues> ______________________________ Tested with build 1.7.04.0002 and it appears to be working correctly.