Make url redirect generic

To make ATDB being able to be deployed behind a proxy on different address direct links to address have to be converted in local urls

To deploy on a different url also an environment variable should be set. Such environment variable is called ATDB_PATH. For instance if you want to deploy ATDB on https://sdc.astron.nl/asw/atdb you have to define the environment as ATDB_PATH='/asw/'.

atdb/atdb/settings/base.py

@@ -183,14 +183,15 @@ MESSAGE_TAGS = {
         messages.ERROR: 'alert-danger',
 }
 
-LOGIN_REDIRECT_URL = '/atdb'
-LOGOUT_REDIRECT_URL = '/atdb'
+FORCE_SCRIPT_NAME = os.environ.get('ATDB_PATH', '/')
+LOGIN_REDIRECT_URL = FORCE_SCRIPT_NAME + 'atdb'
+LOGOUT_REDIRECT_URL = FORCE_SCRIPT_NAME + 'atdb'
 
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/2.0/howto/static-files/
 
 #STATIC_URL = '/static_atdb/'
-STATIC_URL = '/atdb/static/'
+STATIC_URL = FORCE_SCRIPT_NAME + 'atdb/static/'
 STATIC_ROOT = os.path.join(BASE_DIR, 'static')
 
 ALL_STATUSSES = ['defining','defined','staging','staged','processing','processed','storing','stored','validated', 'archiving','archived','finished']
@@ -200,4 +201,4 @@ AGGREGATES = ['failed','active','total']
 
 QUERY_LIMIT_MULTI_CHANGE = 1000
 MAX_MONITORING_HISTORY_HOURS = 7 * 24
-SERVICES_LATE_WARNING_SECONDS = 1800
\ No newline at end of file
+SERVICES_LATE_WARNING_SECONDS = 1800