Error messages for failing floating IP association

Add more informative error message when trying to
associate a 2nd floating IP to an instance

Change-Id: I12038012ff5a60512408b114db22f2638fd135b1
Closes-Bug: #1289496
Data Processing delete buttons missing icon

Refactor code to use DeleteAction instead of BatchAction.

Change-Id: I5ca73ddf169209a46d058c00960b376c935c2034
Closes-Bug: #1392909
Data Processing - capitalize some delete action buttons

Just some tiny nits.

Change-Id: Ib6f4882d352bea159800e73f9dfa0e7869e689e6
Add delete tests for Data Processing panels

Change-Id: I7f81f8157135def51110e54029a9ae60b54ee075
Closes-Bug: #1393171
Defining missing failure_url

failure_url is used to redirect on an API call failure, however it is
never defined. Adding that definition.

Closes-Bug: #1393579
Change-Id: If0f610ece31624f5ae3ad9ba092594232b81a02a
Updated from global requirements

Change-Id: I48379263f08ffeb51256c6107d71b914c80adbae
Merge "Defining missing failure_url"
Merge "Error messages for failing floating IP association"
Merge "Data Processing - capitalize some delete action buttons"
Merge "Data Processing delete buttons missing icon"
Merge "Add delete tests for Data Processing panels"
Merge "Updated from global requirements"