Rename EntityFramework to EntityFramework.Core
Add EntityFramework meta-package
Moved Entry Methods from ChangeTracker to DbContext
Fix resources on *.csproj builds
Added IsNull check to ModificationCommand to prevent DBNull propagation
This commit cleans up shared resources by moving check and string resources
to the shared directory and updating project references.

Removed and condensed copied resources from resx and string designer files
Commands: Use the directory of the last migration. Start a new namespace when migrations for a different context already exist.

Fixes #1231
Remove portable targets (for now)
moving perf microbenchmarks out of perf directory
Setting Nullable & enum property correctly in model snapshot and designer code
Updating to release NuGet.config
Updating to dev NuGet.config
Add readme.html to EntityFramework package
Disabling failing microbenchmark tests.  When these tests fail, they halt test execution
preventing other test suites from executing
pointing default perf tests to localdb rather than sqlexpress
Adding a convention to discover navigation properties and the entity types to which they point.
Removing shadow props if the FK on them is removed.