Copy and paste is always visible.

This goes with new changes in the copy plugin that enables/disables the
button rather than hiding it. Fixes jitter in the ui as well.
move save and auth buttons into editor header
indicate current user in auth dropdown
do not let editor panel drop below the others
removed rounded corners from boxes
use colors from mock-up
s/change book/change repository/
Merge remote-tracking branch 'origin/master' into 58354376-make-colors-better

Conflicts:
	styles/variables.less
	styles/workspace/sidebar.less
rip out tooltips on sidebar edit buttons
change copy in 'add' menu of ToC
change hover behavior to make modules looks both draggable and clickable
add tooltip to further indicate simultaneos drag/click behavior

This is problematic because it 1) will interfere with showing full title
and 2) it also appears in picker, not just TOC.
Don't cut off the heading/table menus.
instead of entire item feeling draggable, make it appear based on a hook at left

includes several styling changes to make the drag hook/handle look nicer
with the other icons/text
Tom hooked me up with an isPicker variable: sweet (like :cake:)
Tom made me an ancestorSelected variable so we can have context-based messaging. Thanks :cake:
prevent drag handle from showing up in picker books
add "Drag to add a new" instructions for the semantic elements
Merge pull request #54 from oerpub/58354376-make-colors-better

use colors from mock-up
Merge pull request #52 from oerpub/57874740

make editor panel not disappear on small monitors