Force apps in "Installed" list to sort by name.

Previously they were left to be sorted however SQLite parsed the query.
This turned out to result in them beign sorted by repos first, then
names. For example, all of the GP apps would be at the bottom of the
list.

Fixes #965.

app/src/main/java/org/fdroid/fdroid/data/AppProvider.java

@@ -696,6 +696,7 @@ public class AppProvider extends FDroidProvider {
 
             case INSTALLED:
                 selection = selection.add(queryInstalled());
+                sortOrder = Cols.NAME;
                 includeSwap = false;
                 break;