CELL related repo now public, changing to https

Easier for staging system and docker image to
stage on.

Author: steinmb

.gitmodules

@@ -9,7 +9,7 @@
 	url = git@github.com:elmcip/elmcip_base.git
 [submodule "cellproject.net/cellproject"]
 	path = cellproject.net/cellproject
-	url = git@github.com:smbjorklund/cellproject.git
+	url = https://github.com/smbjorklund/cellproject.git
 [submodule "cellproject.net/themes/centum"]
 	path = cellproject.net/themes/centum
-	url = git@github.com:smbjorklund/centum.git
+	url = https://github.com/smbjorklund/centum.git