Removed some extraneous dependencies and instead made all the
diagnostics packages be independent packages that happen to share some
concepts/source code.
The common Razor base class code was moved to a shared source file. Then
the Diagnostics page, ELM page, and EF database page all use that. Also
updated the page generator to use the new shared code.
See #257
- aspnet/Coherence-Signed#187
- remove `<RootNamespace>` settings but maintain other unique aspects e.g. `<DnxInvisibleContent ... />`
- in a few cases, standardize on VS version `14.0` and not something more specific