Updated dependency versions
Fix phone validation in regform
Fix participant not linked to parent contribution

 - prevent ContributionParticipations which are both authors and speakers to
   have their link to the contribution removed when the author is removed but
   the speaker remains.
 - fixes #1596
Add script to fix missing parent contributions

Add a script to find existing `ContributionParticipation` objects with a
missing link to their parent contribution and reset the link appropriately.
Fix rich editor loosing focus on (shift + ) tab

 - prevent the naviation away from the editor when pressing tab or shift + tab
 - fix #1622
Fix disabled "Save" button after copy&paste to min

 - enable the save button correctly after pasting in the minutes editor
 - fix #1653
Index secondary email address

 - add the option to index secondary emails on the add and remove methods
 - reindex the user's secondary emails on update (set/add/remove) everywhere
   when needed
Clean up import and PEP8

 - cleans up imports
 - enforces some PEP8 rules
handle new primary and seconday emails

 - proper check when changining the primary email
 - proper check when adding a new seconday email
 - send confirmation email when changing the primary email
 - unifed confirmation email endpoint for primary and secondary addresses
 - random url for email confirmation
 - store pending emails in a generic cache instead of the avatar
 - remove the old active secondary email logic
 - remove the pending sencondary email logic from the avatar
 - update the secondary emails field on the settings page directly when setting
   a secondary address as the primary one
Fix bug related to db conflict

 - fix a bug where deleting the token would prevent settingthe email address
   when a db conflict occurs
 - part of the fix for emails
 - improvements related to i18n
Replace flash with redirection page

 - replace the uselss flash (for v1.2) message with a page which shows the
   message and redirects after some time.
 - removed old template which was used to confirm secondary email addresses