Only emit authorization header when it is not null
Expose method attributes at the dreamStage level
Do not recursively fetch attributes
Merge pull request #106 from yurigorokhov/MT-14717-2

Mt 14717 2
DreamHostService:
* reverted connections/@active back to connections/@count (should have known better than to change something that used to work)
* fixed an NRE issue with showing the host status when no connection limit is provided
status.xslt: show pending connections as well
Removed services and status XSLT altogether since we actually prefer raw XML output.
Merge pull request #107 from bjorg/DR-116

DR-116 Implement a request queue so limit max parallel requests