Certificate/wireless plugins; major refactoring

Migrate much of BI to Services.
Added Wireless Profile Provider plugin feature.
Added Certificate Authority Provider plugin feature.
Modified Certificate Provider plugin feature.
Database migration v17, for Device Profiles.
Enrolment Client Updated to support CA Certificates, Wireless Profiles
and Hardware Info.
New Client Enrolment Protocol to support new features.
Plugin Manifest Generator added to main solution.
Improved AD search performance.

Disco.Web/Views/Job/JobParts/_Subject.cshtml

@@ -1,4 +1,5 @@
 @model Disco.Web.Models.Job.ShowModel
+@using Disco.Models.Services.Job;
 @using Disco.Services.Users.UserFlags;
 @{
     Authorization.Require(Claims.Job.Show);
@@ -293,11 +294,11 @@
                                             {
                                                 switch (Model.LocationMode)
                                                 {
-                                                    case Disco.Models.BI.Job.LocationModes.Unrestricted:
-                                                    case Disco.Models.BI.Job.LocationModes.OptionalList:
+                                                    case LocationModes.Unrestricted:
+                                                    case LocationModes.OptionalList:
                                                 @Html.TextBoxFor(m => m.Job.DeviceHeldLocation, new { @class = "small discreet" })
                                                         break;
-                                                    case Disco.Models.BI.Job.LocationModes.RestrictedList:
+                                                    case LocationModes.RestrictedList:
                                                         List<SelectListItem> listOptions = new List<SelectListItem>() { new SelectListItem() { Value = "", Text = "<Unknown>" } };
                                                         if (!string.IsNullOrWhiteSpace(Model.Job.DeviceHeldLocation) && !Model.LocationOptions.Any(l => l.Location.Equals(Model.Job.DeviceHeldLocation)))
                                                         {
@@ -345,8 +346,8 @@
                                     $(function () {
                                         @switch (Model.LocationMode)
                                         {
-                                            case Disco.Models.BI.Job.LocationModes.Unrestricted:
-                                            case Disco.Models.BI.Job.LocationModes.OptionalList:
+                                            case LocationModes.Unrestricted:
+                                            case LocationModes.OptionalList:
                                                 <text>
                                         var $deviceHeldLocation = $('#Job_DeviceHeldLocation');
                                         var $ajaxSave = $deviceHeldLocation.next('.ajaxSave');
@@ -430,7 +431,7 @@
                                             });
                                         </text>
                                                 break;
-                                            case Disco.Models.BI.Job.LocationModes.RestrictedList:
+                                            case LocationModes.RestrictedList:
                                                         <text>
                                         document.DiscoFunctions.PropertyChangeHelper(
                                             $('#Job_DeviceHeldLocation'),