Added the following features for admin volumes types
1. "Create Volume Type" dialog should include a description field.
2. The volume types table should include description column.
3. The volume types table name and description columns are in-line
editable.
4. The 'Edit Volume Type' action is added for the volume type. User should
be able to update volume type name and description.
Added the following features in project volumes
1. "Create Volume" dialog will have description for the selected volume
type when volume type select is available.
2. "No Volume type" will have some description as well.
Implements: blueprint volume-type-description
Change-Id: I7c8548756bcd3566873876bbc59f9b9c21d6846b
84074ce020