Properly set tw_settings_path after decrypt on data media devices

When tw_settings_path is not set correctly for /data/media/0 when
present, custom themes will not load (and who knows what else may
also be broken) so set it properly after decrypting the device.

Change-Id: Id3dff04f62cf9c953c8a2ca07fe9ac597dcda20f
diff --git a/partitionmanager.cpp b/partitionmanager.cpp
index d363fbf..c3b10ac 100644
--- a/partitionmanager.cpp
+++ b/partitionmanager.cpp
@@ -1462,6 +1462,7 @@
 				dat->Storage_Path = "/data/media/0";
 				dat->Symlink_Path = dat->Storage_Path;
 				DataManager::SetValue("tw_storage_path", "/data/media/0");
+				DataManager::SetValue("tw_settings_path", "/data/media/0");
 				dat->UnMount(false);
 				Output_Partition(dat);
 			}