Encapsulate codemirror

[azmy60]

fix #1883

[rathboma]

This is a great start, but we're still 'leaking' too much of codemirror into the parent components. More of that work needs pushing down into text-editor.

Also, while I know we do this in a couple of places because it is unavoidable, we should not call methods directly on child components.

[rathboma]

This looks really really good. I think this simplifies the codebase a lot.

That said, this PR still does some things that aren't really in the spirit of how Vue expects components to communicate with each other (editorInterface).

If we can remove editorInterface I think we'll be good to merge.

[azmy60]

@rathboma I removed the editorInterface. I'm finally able to update stuff just by props. But some parts really depends on the CodeMirror instance, like removeQuotesFromQuery, autoComplete, etc.. So I put these ones as plugins. Don't know if you'd like it or not, but let me know if it needs some changes.

[rathboma]

Fantastic work here. This was a LOT of refactoring.

[rathboma]

@azmy60 Just need to resolve the merge conflicts, then merge away