adding filter for submission csv name export. see #77
Merge pull request #79 from BFTrick/add-csv-export-name-filter

Adding Filter for Submission CSV Name Export
added admin css to fix a spacing issue with button-controls
added some admin css to fix some diplsy issues with field settings
Added the ability to duplicate forms from the form list page. Added a function that returns a serialized version of the form for export.
Added the ability to search the submission database by 'action'.
Fixed a bug that was causing the error message field to be visible even when no errors were present.
Added an extra check to the required field validation to make sure that the field value isn't "false" before validating it.
Fixed calculation fields so that they work properly with currency masks.
Updating to version 2.2.42.