Fixes #1469 - save button doesn't appear to always work. Also fixes some other issues such as flickering visible message about 'you are about to navigate away' and issue where dialog is still visible after being 'dismissed' when you use back button to return to the edit page.
Fix #1342 by applying RequireRemoteHttps attribute to Register action
Fix warnings: DatabaseName' hides inherited member 'NuGetGallery.Operations.DatabaseTaskBase.DatabaseName' by removing the hiding members.
And refix build warnings about DatabaseName. Old fix was warning-fixing by build-breaking.
using max-width and max-height for package icons to avoid distortion and blurry upscaled icons, replace 50px by 48px

Conflicts:
	src/NuGetGallery/Content/Site.css
Merge pull request #1413 from NuGet/anurse/1342-registerforcessl

Fix #1342 by applying RequireRemoteHttps attribute to Register action
Merge pull request #1526 from NuGet/tomone/1525-PackageIconsDistortedAndBlurry

Fix 1525 Package Icons smaller than 50x50 look blurry on nuget.org
Merge pull request #1412 from NuGet/tilovell-FixDatabaseInheritedMemberWarnings

Fix warnings: DatabaseName' hides inherited member 'NuGetGallery.Operati...
Fixes #1513 - Update to NuGet.Core 2.7.0
Creating the migration for adding LastError column.
Log package errors to the database during apply package edit.
Perform each package edit in isolation, with errors recorded in further isolation.
Use SaveChanges as our transaction commit instead of using EntityTransaction, in hopes it will avoid table locking.
Fix a couple typos in changelog
Merge pull request #1533 from NuGet/tilovell/WorkerShouldRecordLastFailureApplyingEdit

Tilovell/worker should record last failure applying edit
Merge pull request #1532 from NuGet/tilovell/1513-UpdateNugetCore

Fixes #1513 - Update to NuGet.Core 2.7.0
Removeduncompletetest
Merge pull request #1536 from NuGet/bhuvak_TestCheckingForBuild

Removeduncompletetest
Fixes #1534 by adding LastEdited date to the v2 feed.
Merge pull request #1537 from NuGet/tilovell/1534-LastEditedDateInFeed

(For staging) Fixes #1534 by adding LastEdited date to the v2 feed.