Download Refactor (#483)

# Added
- New: Cards when processing a download shows a spinner for the progress of the download

# Changed
- Changed: Downloads now always take the backend filename and are streamed in a more optimal manner, reducing the javascript processing that was needed previously.
==================================

* Started refactor of downloader to be more UX friendly and much faster.

* Completed refactor of Volume download to use a new mechanism. Downloads are streamed over and filename used exclusively from header. Backend has additional DB calls to get the Series Name information to make filenames nice.

* download service has been updated so all download functions use new event based observable. Duplicates code for downloading, but much cleaner and faster.

* Small code cleanup

UI/Web/package-lock.json

@@ -31,6 +31,7 @@
         "bowser": "^2.11.0",
         "file-saver": "^2.0.5",
         "lazysizes": "^5.3.2",
+        "ng-circle-progress": "^1.6.0",
         "ng-lazyload-image": "^9.1.0",
         "ng-sidebar": "^9.4.2",
         "ngx-toastr": "^13.2.1",
@@ -12742,6 +12743,19 @@
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
       "dev": true
     },
+    "node_modules/ng-circle-progress": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/ng-circle-progress/-/ng-circle-progress-1.6.0.tgz",
+      "integrity": "sha512-HD7Uthog/QjRBFKrrnbOrm313CrkkWiTxENR7PjUy9lSUkuys5HdT0+E8UiHDk8VLSxC/pMmrx3eyYLhNq7EnQ==",
+      "dependencies": {
+        "tslib": "^2.0.0"
+      },
+      "peerDependencies": {
+        "@angular/common": ">=9.1.0",
+        "@angular/core": ">=9.1.0",
+        "rxjs": ">=6.4.0"
+      }
+    },
     "node_modules/ng-lazyload-image": {
       "version": "9.1.0",
       "resolved": "https://registry.npmjs.org/ng-lazyload-image/-/ng-lazyload-image-9.1.0.tgz",
@@ -30964,6 +30978,14 @@
       "integrity": "sha1-yobR/ogoFpsBICCOPchCS524NCw=",
       "dev": true
     },
+    "ng-circle-progress": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/ng-circle-progress/-/ng-circle-progress-1.6.0.tgz",
+      "integrity": "sha512-HD7Uthog/QjRBFKrrnbOrm313CrkkWiTxENR7PjUy9lSUkuys5HdT0+E8UiHDk8VLSxC/pMmrx3eyYLhNq7EnQ==",
+      "requires": {
+        "tslib": "^2.0.0"
+      }
+    },
     "ng-lazyload-image": {
       "version": "9.1.0",
       "resolved": "https://registry.npmjs.org/ng-lazyload-image/-/ng-lazyload-image-9.1.0.tgz",