Improvements to manage apps / running services:

- Running services now keeps a single data structure to make
  switching through the UI a lot faster.
- Display text when there are no apps.
- Fix deadlock.
- Add new preference entry to view manage apps for storage use.
- Etc.

Change-Id: I0f5babf407ed7e84169f59584ddcb6cd0e9d67d9

src/com/android/settings/applications/ApplicationsState.java

@@ -320,7 +320,7 @@ public class ApplicationsState {
         if (entry.icon != null) {
             return;
         }
-        synchronized (mEntriesMap) {
+        synchronized (entry) {
             if (entry.icon == null) {
                 entry.icon = entry.info.loadIcon(mPm);
             }