Upgrade deprecation-cop

Fixes suggestion to use .editor[mini] to suggest
atom-text-editor
Use classes rather than location attributes
Merge pull request #4216 from atom/bo-panel-classes

Use classes on atom-panels rather than location attributes
Upgrade themes to fix git-status tree-view colors
:arrow_up: legal-eagle@0.6
Add core.autoHideMenuBar
Set description, not title
Add toggle menu bar item
Implement menu bar toggling
:arrow_up: donna@1.0.7
Set menu bar visible when no longer autohiding
Always set menu bar visibility when changing autohide
Set autoHideMenuBar on properties object
Mention Alt shows the menu bar
:penguin: Add Toggle Menu Bar to View menu
Only register command on Windows & Linux
:memo: Mention Alt toggles
Start on upgrading UI theme guide
Talk about context-targeted style sheets
Add syntax theme upgrade guide