Merge branch '352-psi-openmpi-modules-not-loading-correctly' into 'master'

Resolve "PSI OpenMPI modules not loading correctly"

Closes #352

See merge request Pmodules/src!351

Pmodules/modulecmd.bash.in

@@ -892,6 +892,8 @@ subcommand_load() {
 		fi
 		test -r "${deps_file}" && load_dependencies "$_"
 
+		[[ ":${LOADEDMODULES}:" == *:${m}:* ]] && continue
+
 		# load module
 		modulecmd="${interp[${current_modulefile}]}"
 		local output=''