Horizontal scroll size for inline editor is wider than visible code

[njx]

If you open a rule from the unminified bootstrap.css in an inline editor, the horizontal scroll area gets much wider than the visible code. This appears to be because CodeMirror takes into account the maximum line length of the entire file, including all the hidden lines.

[njx]

This reproduced in sprint 5 as well.

[njx]

QRB assigning to sprint 7

[njx]

I have a better fix in CodeMirror itself that Marijn indicated he'd be willing to take: https://github.com/njx/CodeMirror2/compare/max-width-ignore-hidden

@gruehle will review, I'll submit it to Marijn, then merge back to Brackets and close this bug. (I manually merged the fix into Brackets locally and tested that it fixes #600, but don't want to check in that double-fix.)

[njx]

Submitted to Marijn: https://github.com/marijnh/CodeMirror2/pull/533

[njx]

Recommend moving this to sprint 9, which is when we'll (hopefully) be able to merge it back from CodeMirror master.

[njx]

Moved to sprint 9.

[jasonsanjose]

Waiting for codemirror integration. Moved to sprint 10.

[njx]

Fixed with latest codemirror merge. Closing.