Switches all input/textarea/select partials into common.
Refactors NeatlinePlugin::filterNeatlineGlobals.
Adds dropRecordField and dropExhibitField static methods on NeatlinePlugin.
Tightens up formatting in filterNeatlineGlobals.
Strips out record form plugin tabs templating.
Collapses neatline_record_tabs into neatline_widgets filter, which gathers arrays with all information about widgets.
Moves common form input helpers under neatline directory.
Simple, raw-string tests for widget tabs and panes in record form template.