drop collection command issues warning instead of error if collection does not exist
task engine altered elapsed time difference logic to conform with python 2.6
new column for deployment runstate
Python < 2.7 now always uses catoxml instead of ElementTree.
new column for upcoming sequence feature.
Fixed a couple of warnings and a syntax error.
catoxml added back to lib for Python < 2.7 compatibility.
ResultSummary is now always returned properly in JSON and XML results, even if it's null.
API - import_backup endpoint now supports json backup files.  UI import no longer requires JSON to be a list, but a list of tasks is permitted.