Fix a few bugs in modules on the site with Opencart in 2.1.0.2

List of some other errors (total number of 16 pcs):
- Watermark stopped displaying after image optimization
- Some buttons ( and -) in the form of creating product cards are not pressed
- New photos are not added correctly to banners
- Several bugs in the custom module for adding forms to the site.

I will send a link to the file with errors after receiving a relevant response.