Switch to a more powerful WYSIWYG editor

[ryanlntn]

The current editor doesn't allow editing source which can be quite a hassle. I suggests we switch to using Trumbowyg which has been working well for us in some other applications.

[yulolimum]

@ryanlntn - where are we at with this?

[ryanlntn]

@yulolimum #107 added support for custom html editors. We could still switch the default editor if we want. I was wondering if it wouldn't make sense to wrap up what I did for Trumbowyg in an npm package to make it easier to add.

[3141618]

@ryanlntn , @yulolimum , @jamonholmgren
Can you provide a step by step documentation on implementing trumbowyg in thesis?

Thank you!