Summary:
Since we changed the way we mark up plaintext emails to wrap them in <pre>
tags, the quote stripper has been failing to restore bodies in the cases
where a plaintext email starts with an inline quote (and thus the whole
contents of the <pre> tag is detected as a quote string).
This diff also fixes the HTML sanitizer to not strip off our custom
"nylas-plaintext" class, which isn't currently used for anything but
allows us to definitively know which tags we added on for marking up
plaintext. Might be useful at some point!
Test Plan: unit test included, manual inspection of message display
Reviewers: evan
Differential Revision: https://phab.nylas.com/D3519
Summary:
Related to #320, #494, #515, #553
Ignore newlines and returns in HTML, they can be inside tags
Allow all attributes so that paste from excel looks nice
Never let someone paste a `contenteditable` attribute
Update specs
Test Plan: Run new specs
Reviewers: juan, evan
Reviewed By: evan
Differential Revision: https://phab.nylas.com/D2309
