Product - added button image toggle and url
meta box - changed save_post hook to pre_post_update
Revert "Product - added button image toggle and url"

This reverts commit 08d86e91b226b195f2c2c33a773c4f68c1297d6f.
Merge remote-tracking branch 'remotes/origin/dev'
Slider option in post is limited to pro themes only.
Fixed font issue introduced by changing the option type to typography.
Added functionality to download backup file of theme option.
Merge branch 'dev'