[Bug120] Remove the "scoped" keyword from style tag
[Bug121] CSS not to break default button styling
Backend/DB: "required" and [error text if] "missing" field
Backend: add error text for incomplete form submissions
Include "required" map into graph.
Front-end validation and error messages.
CSS modifications for required fields and error messages
Mark required fields with an asterisk
Mark invalid fields individually, not the surrounding row.
[Bug119] Group 'default option' radio buttons together correctly
[Bug122] Minor layout fixes for WP 3.8 compability
Backend: enlarge message field for incomplete forms
Backend: further layout fix for 3.8
Update form shortcode when ID changed automatically
Substitute misleading "Invalid Formula" by ellipsis
[Bug83] Better compability with plugins that move scripts to footer
Update readme and plugin description texts
Eliminate dependency on PHP 5.3+ in front-end graph data representation
Reference DB for WP 3.8
Validation: don't show error message if not defined