Restore part of 85f04a that was reverted.

This appears to be a problem with any document with images. @render() is called
multiple times, and you have to clean up and re-initialise Aloha after
every render. Strictly speaking it would be better to set the content
of the editor rather than rerender the whole thing, but we'll fight that dragon
some other day.
update octokit version
Fix the goWorkspace method for bookshelve refactor

goWorkspace isn't used in gh-book, which is why this bug wasn't picked up until
now.
Avoid editor pile-up, clean up on closing of edit view.
Remove commented less import.

I asked @tmsp1 to comment this so I can check if it needs to be
moved elsewhere, or whether it can simply be removed. Turns out
the bootstrap variables are already included in styles/main.less
and also in every other product where this is re-used, so deleting it
is the right thing to do.
copy change in bookshelf sidebar
Merge pull request #6 from oerpub/63306960-other-shelves-change-shelf

copy change in bookshelf sidebar
Merge pull request #1 from oerpub/63207788-fix-images-tables-p2

Restore part of 85f04a (in github-bookeditor) that was reverted.
remove octokit
Merge remote-tracking branch 'origin/master' into assorted-fixes-episode01

Conflicts:
	scripts/views/workspace/content/aloha-edit.coffee
Merge pull request #5 from oerpub/assorted-fixes-episode01

Small fixes to get bookish working again as standalone
Merge branch 'master' into phil-css-scroll-page