Add custom action: Auto-Generate dataview fields

[EitanBlumin]

In system dataview -2 (dataview fields), add action button to generate dataview fields based on existing underlying table structure.

Parameters:

• dataview: dataview[search]

Tasks:

• [X] Create backend API controller: ajax_dataview.asp?mode=autoinit&ViewID={{urlparam[dataview[search]]}}
• [ ] New action type: API Call
• [ ] Add the new action to the dataview fields module, and save it to PostDeployment scripts