improve .deb control file and avoid dependence on xdg-utils when building sparrow-server debs

build.gradle

@@ -240,7 +240,12 @@ jlink {
             installerType = "exe"
         }
         if(os.linux) {
-            installerOptions += ['--resource-dir', 'src/main/deploy/package/linux/', '--linux-shortcut', '--linux-menu-group', 'Sparrow', '--linux-rpm-license-type', 'ASL 2.0']
+            if(headless) {
+                installerOptions = ['--license-file', 'LICENSE']
+            } else {
+                installerOptions += ['--resource-dir', 'src/main/deploy/package/linux/', '--linux-shortcut', '--linux-menu-group', 'Sparrow']
+            }
+            installerOptions += ['--linux-app-category', 'utils', '--linux-app-release', '1', '--linux-rpm-license-type', 'ASL 2.0', '--linux-deb-maintainer', 'mail@sparrowwallet.com']
             imageOptions += ['--icon', 'src/main/deploy/package/linux/Sparrow.png', '--resource-dir', 'src/main/deploy/package/linux/']
         }
         if(os.macOsX) {