Remove App Diagnostics help from Set-AzureWebsite

WindowsAzure#1533
Merge pull request #1534 from ogail/master

Remove App Diagnostics help from Set-AzureWebsite
Merge pull request #1524 from AzureRT/dev

Endpoint and StopAzureVM enhancements
Update release info
Merge pull request #1541 from ogail/ver

Update release info
update changelog for 0.6.15
Enhance DisableAzureWebsiteDiagnostic to work on Storage and File together
add Stop-AzureVM change
update readme
Merge branch 'release' of https://github.com/WindowsAzure/azure-sdk-tools into release
Merge pull request #1556 from guangyang/release

changelog and readme for 0.6.15
Fix storage account multiple addition to website diagnostic cmdlet
Merge pull request #1555 from ogail/1549

Enhance DisableAzureWebsiteDiagnostic to work on Storage and File together
Add documentation for Get-AzurePublishSettingsFile
Add DisableAzureWebsiteDiagnostic scenario tests
Fix UT
Merge pull request #1558 from ogail/1542

Add documentation for Get-AzurePublishSettingsFile
Merge pull request #1557 from ogail/1548

Fix storage account multiple addition to website diagnostic cmdlet
Merge pull request #1559 from ogail/1536

Add DisableAzureWebsiteDiagnostic scenario tests
Add Enable-AzureWebsiteApplicationDiagnostic scenario tests
WindowsAzure#1535