Fixes Issue #506, "When I load new Baseline model I still see choice arguments from older Baseline model."

[#57236420]
Merge branch 'origin/develop'
Merge remote-tracking branch 'remotes/origin/develop' into PAT-EC2
Merge pull request #528 from NREL/20130924_ETH_BugFixes

Fixes Issue #506, "When I load new Baseline model I still see choice arg...
Passed tested described in issue on my mahcine
Merge branch 'PAT-EC2' of github.com:NREL/OpenStudio into PAT-EC2
Add http:// to url if we get url without a scheme (current input from AWSProvider)

[#54814928]
Merge remote-tracking branch 'remotes/origin/develop' into PAT-EC2
Merge remote-tracking branch 'remotes/origin/develop' into PAT-EC2
Fixing small problems in AWSProvider

[#54814928]
Merge remote-tracking branch 'remotes/origin/develop' into PAT-EC2