Merge pull request #78 from cuongnv540/task#5500

Task#5500
Task#5471 create controller and add new activity
Merge pull request #79 from vigov5/task#5471

Task#5471 create controller and add new activity
task#5507 fix invite people
Merge pull request #81 from tunghdt91/task#5507

task#5507 fix invite people
Task #5497 create partial activity view for stream
Merge pull request #80 from VanGiang/task/5497

Task #5497 create partial activity view for stream
task#5505 restrict edit poll settings
Merge pull request #82 from cuongnv540/task#5505

task#5505 restrict edit poll settings
Task #5512 fix new poll view
Merge pull request #83 from VanGiang/task/5512

Task #5512 fix new poll view
task#5505 restrict edit poll settings