revoke automatic login cookie before registration (fixes #3416)
remove opCommunityTopicPlugin dependency in testcases (fixes #3423)
fix `Array to string conversion' error in opI18N (fixes #3424)
remove useless include in designActionsTest.php (fixes #3425)
remove useless tests in pc_backend (fixes #3426)
change the tester class in snsActionsTest.php (fixes #3427)
make IsRequired and IsTrim optional in opFormItemGenerator (fixes #3428)
remove skeleton tests for mobile_frontend and mobile_mail_frontend (fixes #3431)
fix fallback error when activity_templates.yml doesn't exist (fixes #2773)
mock out the Zend_Mail_Transport object in unit tests (fixes #3443)
Revert "fix timeout while join all member to the community on pc_backend (fixes #1662)"

This reverts commit a10fbf6cb52f0d50beda3e428f91a0d775c04254.
Revert "improved performance while join member to community (#927)" (fixes #3445)

This reverts commit d6956cde880be65aefc802e01b070bb9d054145f.
add the $free option for Community::joinAllMembers() (fixes #3445)
remove skeleton tests for pc_frontend (fixes #3431)
use opZendMailTransportMock for CommunityMemberTable::processJoinConfirm() tests (fixes #3443)
skip the test for gzip type column if zlib extensions is missing (fixes #3447)
more improvements for getPositionsByMemberIdAndCommunityId() method (fixes #3445)
use HYDRATE_NONE mode for getPositionsByMemberIdAndCommunityId query (fixes #3445)
load javascript libraries (such as jquery.min.js) for insecure page (fixes #3485)
add default/customizingCss action to op_ssl_selectable_actions (fixes #3475)