[Frontend] CSS tweaks to fix required glyph positioning

#700
CSS modded to allow better cross-browser
positioning of 'required' form-row glyphs;
Other elem's CSS adjusted as a result;

platform/commonUI/general/res/sass/controls/_controls.scss

@@ -114,6 +114,7 @@ label.radio.custom {
     $d: $formRowCtrlsH;
     cursor: pointer;
     display: inline-block;
+    line-height: 120%;
     margin-right: $interiorMargin * 4;
     padding-left: $d + $interiorMargin;
     position: relative;