String resource tidy up
* Add info about installing KVM to use migrations commands to Database Error Page
* Removing 'refresh the page' <a> which was broken
* Fixing typos (all string run thru spell check - thought I had done this but evidently not)
* Fixing package description for SQL Server package
Fixes error when creating the db for Query Execution perf tests.

This makes the process a bit slower since it calls SaveChanges more often, but it works well.

Additionally fixing kproj and project.json files for the perf tests to reflect they are console apps and not libraries.
Merge branch 'perftestfix' into dev
Adding a simple FT for migrations on SQL Server
Adding a restriction on the number of rows inserted in a single batch.

Fixes #974
Refactoring BuiltInDataTypesTest and TransactionTest
Made the InMemory provider to match tables by entity type name
Disabled BuiltInDataTypesTest for ATS due to #965

Fixes #789
renaming TraceType to LogLevel
Update .kproj files
Updating to release NuGet.config
Merge branch 'release' into dev
Fixed more FTs that were using the default service provider
Disabled ATS BatchTests and EndToEndTests due to #965
Fixing references used by the performance projects

This fixes issue #991

The TypeLoadException was incorrectly reporting that a method had no body when in reality it was unable to locate one of the dependencies. It's not clear why this exception was reported, but the error stops showing after fixing the project references (both in the csproj and in project.json), followed by a .\build initialize and a clean build of the EntityFramework solution.

The performance projects are now running properly under net45.
Tiny: Rename IsDatabaseCreated on in-memory database to EnsureDatabaseCreated because it doesn't return whether or not it is "created", but rather whether or not it was "created" by this call.
Stop using DbContextConfiguration to get ILoggerFactory

This is part of Issue #641 which is about cleaning up the use of DbContextConfiguration. DbContextConfiguration is intended to help resolve dynamic services--that is, services for which the actual type/instance of service to use depends on the current context configuration. However, it has gradually spread throughout the code as a general purpose service locator. This causes dependencies to be hidden and creates a lot of coupling to DbContextConfiguration throughout the code, so I am making a set of changes to help fix this.

This change makes things that need and ILoggerFactory depend on it in the normal way rather than getting one from DbContextConfiguration.