[Media] Refactor gallery form type.
Change logic media image uploader.
Add image config validator.
Remove override logic from image config validator.
Fixes..
Image cropper and upload handler.
Add image uploader.
Improve media file system.
Add encryption.
Add more encryption test.
Add image cropper controller.
Add token test and improve javascript.
Change structure.
Add token validator into image upload action.
Fixed typos.
Start write image cropper test.
Improve image cropper.
Initial image resizer.
Image resizer.
Update README.md