Make form elements consistent with button sizes.

services/web/public/stylesheets/core/ol-variables.less

@@ -78,6 +78,9 @@
 @navbar-subdued-hover-bg          : #FFF;
 @navbar-subdued-hover-color       : @ol-green;
 
+// Forms
+@input-border-radius              : unit(@line-height-base, em);
+@input-height-base                : @line-height-computed + (@padding-base-vertical * 2);
 // TODO Warning color-orange?
 @btn-warning-color       : #FFF;
 @btn-warning-bg          : @ol-red;