Created function _read_config_files to read pycaosdb.ini files from different...

Created  function _read_config_files to read pycaosdb.ini files from different paths. Testfile changed accordingly.

src/caosdb/__init__.py

@@ -37,7 +37,7 @@ from os.path import expanduser, join
 import caosdb.apiutils
 from caosdb.common import administration
 from caosdb.common.datatype import (BOOLEAN, DATETIME, DOUBLE, FILE, INTEGER,
-                                    REFERENCE, TEXT, LIST)
+                                    LIST, REFERENCE, TEXT)
 from caosdb.common.state import State, Transition
 # Import of the basic  API classes:
 from caosdb.common.models import (ACL, ALL, FIX, NONE, OBLIGATORY, RECOMMENDED,