undo last merge
Merge pull request #692 from kurund/CRM-12458

undo last merge: 5a10656d1e6f02ef543375e974b2439c50f3f66d
CRM-12569 permission activity links and tasks more accurately
Merge pull request #693 from lcdservices/activity-perms

CRM-12569 permission activity links and tasks more accurately
Update version to 4.3.4
fixed error message, CRM-12574
Merge pull request #698 from kurund/CRM-12574

fixed error message, CRM-12574