rename sehistory service to feeder

however, the name of the sehistory repo containing the feeder
is kept

bin/feeder

@@ -0,0 +1,8 @@
+#!/usr/bin/env python3
+
+import sys
+from os.path import expanduser
+sys.path.append(expanduser('~'))
+from servicemanager import run
+
+run('feeder', sys.argv[1:])