Touch up the spacing and style of the app view

Adds more padding between app icons, left aligns the view,
removes the ugly separator, adds some margin on the right.

data/theme/gnome-shell.css

@@ -347,6 +347,7 @@ StTooltip StLabel {
 }
 
 #viewSelector {
+    padding: 16px;
     spacing: 16px;
 }
 
@@ -485,22 +486,21 @@ StTooltip StLabel {
 }
 
 .icon-grid {
-    spacing: 6px;
+    spacing: 36px;
     -shell-grid-item-size: 70px;
 }
 
 .all-app {
-    padding: 10px;
+    padding: 36px 150px 10px 0px;
 }
 
 .app-section-divider-container {
-    padding-top: 10px;
-    padding-bottom: 10px;
+    padding-top: 36px;
+    padding-bottom: 36px;
 }
 
 .app-section-divider {
     height: 2px;
-    background-image: url("separator-white.png");
 }
 
 #dash > .app-well-app {

js/ui/appDisplay.js

@@ -30,7 +30,7 @@ function AlphabeticalView() {
 AlphabeticalView.prototype = {
     _init: function() {
         this.actor = new St.BoxLayout({ vertical: true });
-        this._grid = new IconGrid.IconGrid();
+        this._grid = new IconGrid.IconGrid({ xAlign: St.Align.START });
         this._appSystem = Shell.AppSystem.get_default();
         this.actor.add(this._grid.actor, { y_align: St.Align.START, expand: true });
     },