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.App/AppConfig.fs

@@ -0,0 +1,33 @@
+namespace MyWebLog
+
+open MyWebLog.Data.RethinkDB
+open Newtonsoft.Json
+open System.Text
+
+/// Configuration for this myWebLog instance
+type AppConfig =
+  { /// The text from which to derive salt to use for passwords
+    [<JsonProperty("password-salt")>]
+    PasswordSaltString : string
+    /// The text from which to derive salt to use for forms authentication
+    [<JsonProperty("auth-salt")>]
+    AuthSaltString : string
+    /// The encryption passphrase to use for forms authentication
+    [<JsonProperty("encryption-passphrase")>]
+    AuthEncryptionPassphrase : string
+    /// The HMAC passphrase to use for forms authentication
+    [<JsonProperty("hmac-passphrase")>]
+    AuthHmacPassphrase : string
+    /// The data configuration
+    [<JsonProperty("data")>]
+    DataConfig : DataConfig }
+ with
+  /// The salt to use for passwords
+  member this.PasswordSalt = Encoding.UTF8.GetBytes this.PasswordSaltString
+  /// The salt to use for forms authentication
+  member this.AuthSalt = Encoding.UTF8.GetBytes this.AuthSaltString
+
+  /// Deserialize the configuration from the JSON file
+  static member FromJson json =
+    let cfg = JsonConvert.DeserializeObject<AppConfig> json
+    { cfg with DataConfig = DataConfig.Connect cfg.DataConfig }