Extend base classes to support form processing

Add methods to the base Object and String classes to facilitate jQuery form
handling.

Signed-off-by: Adam King <rak@linux.vnet.ibm.com>
Extend jQuery form

Facilitate formulating an Object from an HTML form, and populating a form
from an Object.

Signed-off-by: Adam King <rak@linux.vnet.ibm.com>
Make use of the new forms handling capabilities

Update the grid and repo edit code to leverage the new form js support.

Signed-off-by: Adam King <rak@linux.vnet.ibm.com>