Add field divisions > 6, fix last fields field margin

src/definitions/collections/form.less

@@ -48,6 +48,7 @@
   clear: both;
   margin: @fieldMargin;
 }
+.ui.form .fields:last-child .field,
 .ui.form :not(.fields) .field:last-child {
   margin-bottom: 0em;
 }
@@ -557,6 +558,26 @@
 .ui.form .five.fields > .field {
   width: @fiveColumn;
 }
+.ui.form .six.fields > .fields,
+.ui.form .six.fields > .field {
+  width: @sixColumn;
+}
+.ui.form .seven.fields > .fields,
+.ui.form .seven.fields > .field {
+  width: @sevenColumn;
+}
+.ui.form .eight.fields > .fields,
+.ui.form .eight.fields > .field {
+  width: @eightColumn;
+}
+.ui.form .nine.fields > .fields,
+.ui.form .nine.fields > .field {
+  width: @nineColumn;
+}
+.ui.form .ten.fields > .fields,
+.ui.form .ten.fields > .field {
+  width: @tenColumn;
+}
 
 /* Swap to full width on mobile */
 @media only screen and (max-width : 767px) {