Fix the links and javascript in the list view to fix deleting a specific meeting

To delete a specific meeting in a recursion we split the recursion into
two and drop the meeting in the middle.
But to do this, we need to know the from_date argument.

The agenda view had this working but for some reasons it was missing from
the list view.
When deleting a meeting, find the next occurrence and forward it to the template
Update the delete_meeting template

Show the date of the meeting that will be deleted as well as the date
of the original object/meeting as stored in the database
Adjust the unit-tests for the fix in the list view (forwarding the from_date)
No need to restrict the updating of recursive meetings to the future

Without lifting this restriction, we are no longer able to delete meeting
from the past that occurred as part of a recursion.
Merge pull request #153 from fedora-infra/fix_delete_in_list

Fix delete in list
Release 0.11 and adjust documentation accordingly
Give some information about the recursion when deleting a recurring meeting
Update the Admin sub-menu on the list view to match what's in the calendar view
Add a new unit-test file specifically dedicated to test corner cases
Fix deleting a recursive meeting in the middle of the recursion

When deleting a recursive meeting, what we need to check is if the
recursion ends before the next occurrence of the meeting. That occurrence
is meeting_date + meeting_frequency. cnt would only have to do here if
meeting_date was the original meeting.meeting_date (which it is not).

Fixes https://fedorahosted.org/fedocal/ticket/135
Add check for the behavior if we try to delete a meeting after the end of the recursion
Add test when deleting a recursive meeting at a date before it starts occurring
Merge pull request #154 from fedora-infra/fix_delete_recurring_meeting

Fix delete recurring meeting
Release 1.11.1 and adjust documentation accordingly
First translation try with Flask Babel extension

See https://fedorahosted.org/fedocal/ticket/2
Simple translations from templates
Translations from python files
Translate and escape JS messages
Translations with variable,s missing translations