Added current datetime timestamp to global Jinja template variables.

This timestamp more or less represents the generation time of the page and may serve as common baseline for multiple time operations. (Redmine issue: #3734)

lib/hawat/base.py

@@ -21,6 +21,7 @@ __credits__ = "Pavel Kácha <pavel.kacha@cesnet.cz>, Andrea Kropáčová <andrea
 import sys
 import collections
 import traceback
+import datetime
 
 #
 # Flask related modules.
@@ -199,6 +200,7 @@ class HawatBaseView(flask.views.View):
 
     def get_template_context(self):
         return {
+            'current_datetime_utc': datetime.datetime.utcnow(),
             'hawat_view_title': self.get_view_title()
         }