Fix returning to a smart group search after adding an activity.

The previous fix for this did not include the civicrm/group/search url
in the list of possible urls to return to; thus smart groups were still
broken for this workflow.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
CRM-15585 - Call pre hooks from api.setvalue
CRM-15602 Fix for logging- only regenerate timestamp triggers on requested tables
Merge pull request #4608 from totten/4.5-trigger-rebuild

CRM-15602 Fix for logging- only regenerate timestamp triggers on requested tables
CRM-15613 - Fix access to undefined property error
Merge pull request #4544 from colemanw/CRM-15585

CRM-15585 - Call pre hooks from api.setvalue
CRM-15642 Modified use location widget to include supplemental addresses 1 & 2

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* CRM-15642: Unable to select similar locations in Event Location tab
  https://issues.civicrm.org/jira/browse/CRM-15642
CRM-11302 - Enhance unsubscribe form to reduce likelihood of accidental unsubscribes

https://issues.civicrm.org/jira/browse/CRM-11302
CRM-15646 - api.setvalue: Add support for custom fields
Merge pull request #4613 from atif-shaikh/CRM-11302

CRM-11302 - added code which conditionally lists the group(s) that the person is unsubscribing from
Merge pull request #4614 from colemanw/CRM-15646

CRM-15646 - api.setvalue: Add support for custom fields
Fixed typo/broken links
Allow falsy values as custom field db defaults

Use if isset($field->default_value) instead of just
if ($field->default_value) so we can set a custom field database
column's default to zero.
Fix spelling mistake

Particiapnt => Participant
Merge pull request #4610 from colemanw/CRM-15613

CRM-15613 - Fix access to undefined property error
Merge pull request #4618 from laryn/patch-2

Fix spelling mistake
Merge pull request #4615 from williamtheaker/upstream

Fixed typo/broken links
CRM-15645 Petition email confirmation URL incompatible with WordPress
CRM-15654 Contact Edit Form spacing can be improved
support for old variable