install: setup.py fix + moved "default" dir in a "sat_templates" dir: the merge request at https://bugs.goffi.org/mr/view/3 was a good basis, but not fully working ("default" dir was removed), this patch fixes it, and do some improvments: - moved "default" in "sat_templates" dir, which correspond to the python module, so it can be found easily from python - added VERSION, and mercurial hash detection, in the same way as for Cagou and backend - slight modification of classifiers - replaces tabs coming from MR by spaces

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sat_templates/default/static/invitation.css	Sat Jun 02 17:25:43 2018 +0200
@@ -0,0 +1,27 @@
+#body {
+    display: flex;
+    flex-direction: column;
+}
+
+.invitation_header {
+    flex: 1
+}
+
+.invitation_header h1,p {
+    text-align: center;
+}
+
+#include_main {
+    flex: 9
+}
+
+#include_main {
+    width: 100%;
+    margin: 0;
+    border: none;
+}
+
+footer {
+    /* footer should already be displayed in included page */
+    display: none;
+}