Huge repo reorganization

In no particular order...
- Created projects using F# generator, using Paket and FAKE
- Split "entities" into their own project, and created interface for
data functions required on those entities
- Renamed "data" project and used it as an implementation of data access
- Created "logic" layer that takes the data interface, and does the
non-persistence-related manipulation of items
- Moved "web" project to "app", and modified Nancy modules to utilize
Logic project and data interface instead of Data project and RethinkDB
connection
- Created test placeholder project; will be filling that out shortly
(TAD?)

src/MyWebLog.Data.RethinkDB/Extensions.fs

@@ -0,0 +1,11 @@
+[<AutoOpen>]
+module MyWebLog.Data.RethinkDB.Extensions
+
+open RethinkDb.Driver.Ast
+open RethinkDb.Driver.Net
+
+let await task = task |> Async.AwaitTask |> Async.RunSynchronously
+
+type ReqlExpr with
+  /// Run a SUCCESS_ATOM response that returns multiple values
+  member this.RunListAsync<'T> (conn : IConnection) = this.RunAtomAsync<System.Collections.Generic.List<'T>> conn