Update Android Studio.
Add error log a little more precisely.
Change hovering pointer to red cross.
Remove unused cord.
Update MediaStore DB only once.
Temp check-in of Gallery work.
Revert "Temp check-in of Gallery work."

This reverts commit 4312fa7d1063d1c0defec039386d00971b421795.
Implement "Rename"
Ver 1.8
Add empty slide list activity. No entry point yet.
Revert Red-Cross hovering icon because some user think it is too much visible.
Wrongly removed native inclusion.
Ver 1.9.