Extended DynamicForm with editByField feature

STDynamicForm extends DynamicForm class allows to switch edit mode:

• Single field edit mode
• All fields edit mode

Properties:

• editByField boolean
• Switches between edit modes
• Default to false (all fields are editable)

Methods:

• saveByFieldFunction (form, item)
  This allows to override the default impelementation of save action in single field edit mode
• cancelFieldEditingFunction (form, item)
  This allows to override the default impelementation of cancel edit action in single field edit mode
  For a fine grained control both methods can be set at field level too

See attachments for the class and example.