NotificationBlock: Implements dynamic attributes cache
Updates Bridging Header
Implements NotificationBlock dynamic attributes caching
NoteTableViewCell: Refesh backgrounds only if needed
Merge branch 'release/4.7' into issue/2904-notifications-performance-improvements
NoteTableViewCell: One placeholder to render them all
NoteTableHeaderView: Nukes draw code
Updates UIImageView+Networking Helpers
NoteTableViewCell: Performance Optimization
WPStyleGuide+Notifications: Really, one placeholder to display them all
Merge branch 'release/4.7' into issue/2904-notifications-performance-improvements
Notification: Adds new helpers
Wires Notification Helpers
WPStyleGuide+Notifications: Exposing Constants
Implements OldSchool NoteTableViewCell height Calculation
Added onboarding tooltip for edit button
Merge branch 'develop' of github.com:wordpress-mobile/WordPress-iOS into feature/editor-165-onboarding

# By Matt Bumgardner (1) and Sendhil Panchadsaram (1)
# Via Sendhil Panchadsaram (2) and others
* 'develop' of github.com:wordpress-mobile/WordPress-iOS:
  Giving a shell script better name
  Updated x and chevron icon
Now shows the onboarding hint the first time through only
Adds WPTableViewHandler comment
Notification: Using properties