Use spring form tags

Change Ingest form to use spring form tags.
Manage backend Ingest form bean

Second step of the Schedule Ingest wizard. Manage the form bean between
pages.
Fix partial form load.

Add name attribute to form fields loaded using Ajax.
Add schedule final step

Add a step showing the result of the schedule.
Merge pull request #9 from juanluisrp/ingest-form-bean

Partial form load