sessionMode: Reindent

This puts all the parameters at the same indent level, which makes the
file much easier to read.

https://bugzilla.gnome.org/show_bug.cgi?id=683156

js/ui/sessionMode.js

@@ -9,7 +9,8 @@ const Params = imports.misc.params;
 const DEFAULT_MODE = 'user';
 
 const _modes = {
-    'gdm': { hasOverview: false,
+    'gdm': {
+        hasOverview: false,
         showCalendarEvents: false,
         allowSettings: false,
         allowExtensions: false,
@@ -45,7 +46,8 @@ const _modes = {
         },
     },
 
-    'initial-setup': { hasOverview: false,
+    'initial-setup': {
+        hasOverview: false,
         showCalendarEvents: false,
         allowSettings: false,
         allowExtensions: false,
@@ -60,7 +62,8 @@ const _modes = {
         }
     },
 
-    'user': { hasOverview: true,
+    'user': {
+        hasOverview: true,
         showCalendarEvents: true,
         allowSettings: true,
         allowExtensions: true,