Add desktop entry and default applications to support opening links in GUI text, labels

fix-URL-links-in-Inkscape-app-v1.diff

diff -u -N Contents/Resources/share/applications.orig/mimeapps.list Contents/Resources/share/applications/mimeapps.list
--- Contents/Resources/share/applications.orig/mimeapps.list	1970-01-01 01:00:00.000000000 +0100
+++ Contents/Resources/share/applications/mimeapps.list	2017-02-14 08:46:35.000000000 +0100
@@ -0,0 +1,3 @@
+[Default Applications]
+x-scheme-handler/http=open.desktop
+x-scheme-handler/https=open.desktop
diff -u -N Contents/Resources/share/applications.orig/open.desktop Contents/Resources/share/applications/open.desktop
--- Contents/Resources/share/applications.orig/open.desktop	1970-01-01 01:00:00.000000000 +0100
+++ Contents/Resources/share/applications/open.desktop	2017-02-14 08:46:40.000000000 +0100
@@ -0,0 +1,11 @@
+[Desktop Entry]
+Version=1.0
+Name=Open
+GenericName=Open
+Comment=Open wih registered native application
+Exec=open %u
+Icon=None
+StartupNotify=false
+Terminal=false
+Type=Application
+Categories=Utility;