GUI-1271
copy folder working in bucket_contents page
GUI-1271
added support for folder paste on bucket landing page. Also tweaked 'paste object' options to show 'paste folder' when appropriate
resolved conflicts
GUI-1271
fixed a bug with pasting via item menu
GUI-1271
UX and code review fixes
Merge pull request #1044 from eucalyptus/GUI-1271

Gui 1271 support for copying folders