Adds equal width fields/form

RELEASE-NOTES.md

@@ -3,6 +3,7 @@
 ### Version 2.1.5 - Nov 1, 2015
 
 **Minor Enhancements*8
+- **Form** - Adds `equal width form` and `equal width fields` for simpler grouped fields
 - **Modal** - `onHide` callback can now cancel event by returning false #3168 **Thanks @mdehoog**
 - **Dropdown** - Added `onLabelRemove` callback that allows value removal to be cancelled by callback **Thanks @goloveychuk**
 

src/definitions/collections/form.less

@@ -851,7 +851,6 @@
 
 
 /* Sizing Combinations */
-
 .ui.form .fields .wide.field {
   width: @oneWide;
   padding-left: (@gutterWidth / 2);
@@ -945,6 +944,16 @@
   }
 }
 
+/*--------------------
+     Equal Width
+---------------------*/
+
+.ui[class*="equal width"].form .fields > .field,
+.ui.form [class*="equal width"].fields > .field {
+  width: 100%;
+  flex: 1 1 auto;
+}
+
 /*--------------------
     Inline Fields
 ---------------------*/