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/app.css	Sat Jun 02 17:25:43 2018 +0200
@@ -0,0 +1,21 @@
+#body {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+#web_app_box {
+    width: 80%;
+    padding: 2em;
+    text-align: justify;
+}
+
+#link_section {
+    font-weight: bold;
+    text-align: center;
+    font-size: 1.5rem;
+}
+
+article p:last-child {
+    text-align: center;
+}