UI/UX fixes

* Cypher frame height fix.
* Give REST frame correct CSS classes for errors.
* Make more sense of REST error messages.
* Show long error messages in frame body.
Fix graph rendering on IE 9

* IE 9 has something called window.performance but not
the method now on that object.
Merge pull request #3496 from oskarhane/2.2-fix-graph-render-ie9

Fix SVG graph rendering in IE 9
Merge pull request #3495 from oskarhane/2.2-ui-polish

UI/UX fixes
Fix for docs bug in import-tool manpage, and an additional example.