2.3.5
add select all feature.
add new option reduce displaying toast.
fixed other minor bugs.

2.3.4
add data saver. prevents image prefetch and saves data traffic.
add Usage Rights filtering.
fixed other minor bugs.

2.3.3.2
fixed some search error.
fixed List view paging.

2.3.3.1
fixed about search take a long time.

2.3.3
Add new display mode "List".
Add feature search by image in device.
Add new option about hide toolbar.