Email editor bug fixes & improvements
- Fixed a bug that was preventing creators from aligning their text in the centre in their emails
- Fixed a bug that was causing uploads to fail due to the length of the file name
- Added the ability to auto-format markdown when pasting into the new editor
- Made changes to the list styles so they align text across multiple lines
- Added a loading state when inserting image into the editor
- Fixed a bug that caused text to be erased and replaced by a bullet when * and then the spacebar were pressed
- Fixed a bug where backgrounds on email templates were not shown when writing or previewing a broadcast
- Fixed a bug where snippets in the editor were not using the same font as the email
- Added validations to check for liquid in the incentive email editor
