Merge branch 'debug-doctest' into 'master'

Doctest must return an error code in case of failure

See merge request !68

test/scripts/run_doctest.py

 #!/usr/bin/env python3
 
-import os
 from flask import Flask
 from flask_sqlalchemy import SQLAlchemy
 
@@ -11,5 +10,6 @@ app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 import labelstower
 labelstower.bp.db = SQLAlchemy(app)
 
-import doctest
-doctest.testmod(labelstower.getter,verbose=True)
+import sys, doctest
+(failure_count, test_count) = doctest.testmod(labelstower.getter,verbose=True)
+sys.exit(failure_count)