add theme as submodule

ea7ff526 · Laurent Heirendt · efbd30c4 · ea7ff526 · 3f950f06
Verified Commit ea7ff526 authored Nov 04, 2019 by Laurent Heirendt ✈
--- a/.gitmodules
+++ b/.gitmodules
+[submodule "theme"]
+	path = theme
+	url = https://git-r3lab.uni.lu/R3/outreach/theme.git
--- a/theme @ 3f950f06
+++ b/theme @ 3f950f06
+Subproject commit 3f950f06b72824f97b486a47d54754eeed0f0faf