make dataDir configurable

python-server/server_interface.py

@@ -1,7 +1,9 @@
 import speech
 import filesystem
+from configparse_wrapper.cpwrap import CFG
+
+MAIN_DIR = bytes(CFG("mainDataDir"),CFG("encoding"))
 
-MAIN_DIR = b"data/"
 
 def parse_request(data):
     ''' parse request and call correct function '''