Updates Podfile.lock
Notifications: Disable UITableView separators
NoteTableViewCell: Implements custom separator
Notifications: Wires custom cell separator
Updates Notification Cell Separator color
Updates Podfile.lock
Updates separator on FRC change
Updates Podfile
Notifications: Renames helper method
Merge pull request #2848 from wordpress-mobile/issue/2587-fixes-double-separator-line

Notifications: Double Separator Line