Fix spinner on Send Report button being misplaced

Closes #377

Tusker/Screens/Report/ReportView.swift

@@ -143,15 +143,17 @@ struct ReportView: View {
             .appGroupedListRowBackground()
 
             Button(action: self.sendReport) {
-                if isReporting {
-                    Text("Sending Report")
+                let label = Text(isReporting ? "Sending Report" : "Send Report")
+                HStack {
+                    label
                     Spacer()
+                    if isReporting {
                         ProgressView()
                             .progressViewStyle(.circular)
-                } else {
-                    Text("Send Report")
                     }
                 }
+                .accessibilityLabel(label)
+            }
             .disabled(isReporting)
             .appGroupedListRowBackground()
         }