GUI-427
created common method to store and download files. Applied it throughout the IAM user pages.
GUI-427
adding csrf checking for rest calls
merged develop
GUI-427
updated landing page 'enable' file download for better error response. Updated all XHR calls for users to have csrf token (and required it)
GUI-427
converted keypair download to use generic file download, pruned old keypair download code
GUI-376, GUI-378
css tweak to get make notifications into floatifications, add auto-dismiss on template generated notifications
GUI-427
removed keypair download - test no longer valid
GUI-427,
minor cleanup
Merge pull request #263 from eucalyptus/GUI-427

Gui 427