Set collectionView.dataSource (if not already set)

- Change image upload compression level
- Set collectionView.dataSource (if not already set)
- Removed GCPlaceholderTextView and replaced with custom code
- Disabled textFldView/textView JustType syntax settings when suggestions are disabled
- Updated podspec version

Signed-off-by: Darren Ehlers <me@darrenehlers.com>