v4.0b4

7dc4db8 Prepare for v4.0b4 release

9ef7e02 Update forms for unit tests

4a937c7 Add frm_import_xml_field hook

2b8e55f Move placeholder migration into XML import process

b5d3570 Make the form template previews look better
Fix form template preview for templates with a date field Strategy11/formidable-pro#2197
Fix php warning for the pages dropdown changes

d0c62bc fix phpcs

a3d21c8 Make it a bit easier to drop a field as the first or last field

47b22c0 Fix styles page with grids turned off
Fix php warning in lite

8498121 Don't use the frm_alignright class in the builder
This class messes up the page and won't look good since the field widths are not yet being used
Use grey for the placeholder color in builder (HTML, embed form, select a field text)