[Frontend] Tweaks to markup and CSS

WTD-1172
scrolling.html markup and CSS hooks;
added comments to change points;
CSS tweaking;

platform/features/scrolling/res/templates/scrolling.html

@@ -13,8 +13,18 @@
             </div>
 
             <div class="tr" ng-repeat="row in rows">
-                <div class="td" ng-repeat="cell in row">
-                    {{cell}}
+                <div
+	                class="td"
+	                ng-class="{ 's-cell-type-value': $index > 1 }"
+	                ng-repeat="cell in row"
+	                >
+	                <!-- ng-class is temporarily hard-coded in next element -->
+	                <span
+		                class="l-cell-contents"
+		                ng-class="{ 's-limit-upr': cell > 0, 's-limit-yellow':1 }"
+		                >
+						{{cell}}
+					</span>
                 </div>
             </div>