In masterview, if one of the sections (e.g. friends' polls) is empty, don't show the header for that section.
n poll detail controller, don't show the header for a section that is empty.
Color of section title in poll detail
Merge remote-tracking branch 'origin/master' into Design_update
attending row
In poll detail controller, put toggle button for creator's poll.
Attending/Not Attending headers should have the same style as the main view
make profile picture into circular shape in poll detail view
In poll detail controller, add swipe left to right to go back to master view.
MasterView swipe down to reload page,  but not showing the “refresh” symbol
nslog for debug
In master view, print “refresh” when one finger swipe down
in poll detail control view, user pic shows at the first time
in poll detail view, user pic shows at the first time
When you change the toggle, you are updated to the correct section