Add floating-action button to StockDetail view

lib/widget/stock_detail.dart

@@ -159,6 +159,11 @@ class _StockItemDisplayState extends State<StockDetailWidget> {
         title: Text("Stock Item"),
       ),
       drawer: new InvenTreeDrawer(context),
+      floatingActionButton: FloatingActionButton(
+        child: FaIcon(FontAwesomeIcons.ellipsisH),
+        // TODO: Add pop-up icons
+        // REF: https://stackoverflow.com/questions/46480221/flutter-floating-action-button-with-speed-dial#46480722
+      ),
       body: Center(
         child: ListView(
           children: stockTiles(),

pubspec.lock

@@ -225,7 +225,7 @@ packages:
       name: preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.1.0"
+    version: "5.2.0"
   qr_utils:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -26,15 +26,11 @@ dependencies:
   http: ^0.12.0+2
   shared_preferences: ^0.5.3+1
 
-  flutter_advanced_networkimage: any
-
-  preferences: ^5.1.0
-
-  qr_utils: ^0.1.4
-
-  package_info: ^0.4.0+16
-
-  font_awesome_flutter: ^8.8.1
+  flutter_advanced_networkimage: any      # Pull image from network or cache
+  preferences: ^5.1.0                     # Persistent settings storage
+  qr_utils: ^0.1.4                        # Barcode / QR-code support
+  package_info: ^0.4.0+16                 # App information introspection
+  font_awesome_flutter: ^8.8.1            # FontAwesome icon set
 
 dev_dependencies:
   flutter_test: