Backup on Migrations (#898)

* Refactored how the migrations are run.

* A backup will be performed before any migrations. Added additional guards before a sub-module is loaded.

UI/Web/src/app/app-routing.module.ts

@@ -10,6 +10,7 @@ import { LibraryAccessGuard } from './_guards/library-access.guard';
 import { OnDeckComponent } from './on-deck/on-deck.component';
 import { DashboardComponent } from './dashboard/dashboard.component';
 import { AllSeriesComponent } from './all-series/all-series.component';
+import { AdminGuard } from './_guards/admin.guard';
 
 // TODO: Once we modularize the components, use this and measure performance impact: https://angular.io/guide/lazy-loading-ngmodules#preloading-modules
 
@@ -17,18 +18,22 @@ const routes: Routes = [
   {path: '', component: UserLoginComponent},
   {
     path: 'admin',
+    canActivate: [AdminGuard],
     loadChildren: () => import('./admin/admin.module').then(m => m.AdminModule)
   },
   {
     path: 'collections',
+    canActivate: [AuthGuard],
     loadChildren: () => import('./collections/collections.module').then(m => m.CollectionsModule)
   },
   {
     path: 'preferences',
+    canActivate: [AuthGuard],
     loadChildren: () => import('./user-settings/user-settings.module').then(m => m.UserSettingsModule)
   },
   {
     path: 'lists',
+    canActivate: [AuthGuard],
     loadChildren: () => import('./reading-list/reading-list.module').then(m => m.ReadingListModule)
   },
   {