OmniGears: dont show theme headers in dynamic list

because they are only static

Change-Id: I2b2d93c2f838302548254aa65021a3818bff5dd4
diff --git a/src/org/omnirom/omnigears/interfacesettings/StyleSettings.java b/src/org/omnirom/omnigears/interfacesettings/StyleSettings.java
index 28d764b..401d392 100644
--- a/src/org/omnirom/omnigears/interfacesettings/StyleSettings.java
+++ b/src/org/omnirom/omnigears/interfacesettings/StyleSettings.java
@@ -240,6 +240,9 @@
         for (ResolveInfo r : packageManager.queryIntentActivities(i, 0)) {
             String packageName = r.activityInfo.packageName;
             String label = r.activityInfo.loadLabel(getPackageManager()).toString();
+            if (r.activityInfo.name.endsWith(".theme")) {
+                continue;
+            }
             if (label == null) {
                 label = packageName;
             }