Updated to 2013.11-snapshot dasein version. Updated google api to v1beta15. Other changes in description.

Fixed compile errors based on update to dasein snapshot. Fixed machine
types API endpoint. Added disks and metadata/tags to vm response
object. Fixed NPE when calling listVirtualMachines(…) with empty filter.
Fix for NPE when calling listVolumes(..) with null filter/regex.
Removed all name replacements for hyphens, spaces, and colons in GoogleDiskSupport and GoogleServerSupport.
Fix for NPE when calling listSnapshots(..) with null filter/regex. Added case for UPLOADING snapshot status.
Fixed providerVlanId value on firewalls.
Made value nullable on Param and added null check for param value when doing a GET. Removed duplicate code in list<Resources>() methods to delegate to list<Resources>(filterOptions) methods.
Added STOPPING state for vms.
Fixed createVlan(..) method override issue. Removed space, colon, etc replace for network names.
Merge pull request #1 from TheWeatherCompany/google-updates

Updated to 2013.11-snapshot and various other fixes.