Fix for EUCA-2782. On faliure, response for Walrus HEAD request will contain HTTP status code only.

New exception types have been introduced for Walrus HEAD requests. Outbound handler checks for the exception type before constructing the HTTP response. Based on these checks the HTTP response does not contain any message body on failures.
General styling changes
change logfile suffix from -faults.log to -fault.log to match Java
tweak fault wording
Fixes EUCA-3550 Walrus Query String Authentication fixed

QSA for Walrus was failing due to double decode of signature
of parameter. The fix is to remove the url decode of the
signature in the Walrus Authentication Handler. This is now
handled by the http message handling at a lower level in the
WS stack.
Merge branch 'testing' into team/clc-dev/reporting
remove manage resources at the top
fix event handling error due to removing manage resources menu
Added glow class to all newly created rows
explanding instance reports to include # of instances and durations, implementing volume reports
Merge branch 'master' of github.com:eucalyptus/eucalyptus-ui
explanding instance reports to include # of instances and durations, implementing volume reports
added volume report generation
Overall minor styling changes. Added notification classes.

Moved '* required fields' notation to bottom of dialog content.
filling in new art entities
new renderer arch with different types; supporting both html and csv for instance and volume reports
modified to use new renderer arch and support html and csv
removed dead code
updated domain model with new properties
removed unneeded props which can be calculated from others