)

* Support MinClientVersion <= 4.0.0.0

Fixes NuGet/Home#5156

* Update Constants.cs

This pull request does the following accessibility improvements:

* Improved the titles of the buttons and select drop-down box on the Upload Verification page
* Improved the registration form
  * Fixed issue where the email input wasn't properly labelled
  * Made all help texts part of the fields' labels.

All of these changes are on the UI, thus, I didn't do any changes to unit tests.

Fixes VSTS bugs [#395317](https://devdiv.visualstudio.com/DevDiv/_workitems?id=395317&_a=edit&triage=true), [#395879](https://devdiv.visualstudio.com/DevDiv/_workitems?id=395879&_a=edit&triage=true), and [#395340](https://devdiv.visualstudio.com/DevDiv/_workitems?id=395340&_a=edit&triage=true).

…table. (#3934)

…ackages table. (#3934)"

This reverts commit def1907.

…#3919)

* Index recommendation for SemVerLevelKey (#3867)

* Fixed the csproj

Improved accessibility for the following pages:

* Account Page
  * Improved the upload and manage package links by separating the label
  and describe sections. Resolves [VSTS #395337](https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=395337&_a=edit)
  * Improved accessibility of "Change" button toggles. The screen reader
  will now describe their state as "expanded" or "collapsed".
  Fixes [VSTS #395336](https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=395336&_a=edit)
  * Improved accessibility of "Add Key" button for API Key management.
  The screen reader will now describe the button as disabled or not.
  Fixes [VSTS #395343](https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=395343&_a=edit).
  * Improved accessibility of "Example glob patterns" link on the API
  Key management by making it selectable with the "Tab" key.
* Manage my Packages Page
  * Improved the `Edit` and `Delete` accessibility labels. Fixes
  [VSTS #395342](https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=395342&_a=edit).
* Upload Package Page
  * Added label to the file upload input. Fixes [VSTS #395339](https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=395339&_a=edit)

This is easier since it does not require an SSH key

… a single certificate at a time (#3959)

Throw if netsh complains about incorrect parameters

Move some css around to try to limit visual impact of change. (#3939)

…te without refreshing the page (#3951)

* fix: tab access is enabled on disabled elements

* make pretty

…ible using keyboard (#3968)

)

* Add block to hide/show copyright claim requirements based on selection.
* Moves validation of signature to controller. Dynamically validate on client side when required.
* Add email admin message. Fix required input UI marking.
* Fix a typo in the mailto address.

[ReleasePrep][2017.05.19]FI of master into dev