.gitignore: merge back changes from Cockpit

In machines/podman and Cockpit we sorted and re-organised the gitignore
file. In navigator I noticed that starter-kit did not have these changes
yet and so we had to re-apply them so let's fix it in the source.

.gitignore

@@ -1,19 +1,33 @@
-*~
+# Please keep this file sorted (LC_COLLATE=C.UTF-8),
-*.retry
+# grouped into the 3 categories below:
-*.tar.xz
+#  - general patterns (match in all directories)
+#  - patterns to match files at the toplevel
+#  - patterns to match files in subdirs
+
+# general patterns
+*.pyc
 *.rpm
-node_modules/
+
-dist/
+# toplevel (/...)
-/*.spec
+/Test*.html
-/.vagrant
+/Test*.json
-package-lock.json
+/Test*.log
-Test*FAIL*
+/Test*.png
 /bots
-test/common/
+/cockpit-*.tar.xz
-test/images/
+/cockpit-navigator.spec
-pkg
+/dist/
-*.pot
+/package-lock.json
-POTFILES*
+/pkg/
-tmp/
+/node_modules/
-/po/LINGUAS
+/tmp/
-/tools
+/tools/
+ 
+# subdirs (/subdir/...)
+/packaging/arch/PKGBUILD
+/packaging/debian/changelog
+/po/*.pot
+ /po/LINGUAS
+/test/common/
+/test/images/
+/test/static-code