Implement the new native designs for the nav bar

This should be behind the new navigation feature flag setup for the front end

This card is to set up the new look and feel for the new mobile designs

https://projects.invisionapp.com/d/main#/console/18532170/400085462/preview

Top nav

• New title on the top left
• Messenger icon with notifications
• Search button

Bottom nav

• Home button
• Channel button
• + add new activity button
• Notification icon
• hamburger menu

Overall design

• Light mode
• Dark mode

changed the description

changed weight to 8

assigned to @juanmsolaro

changed milestone to %Sprint::01/15 - Youthful Yabby

changed due date to January 28, 2020

added scoped labels

added scoped label

added to epic &93

changed the description

added scoped label and automatically removed label

marked the task New title on the top left as completed

marked the task Search button as completed

marked the task Home button as completed

marked the task Channel button as completed

marked the task + add new activity button as completed

marked the task Notification icon as completed

marked the task hamburger menu as completed

marked the task Light mode as completed

marked the task Dark mode as completed

marked the task portrait mode as completed

marked the task Messenger icon with notifications as completed

changed the description

added scoped label and automatically removed label

added scoped label and automatically removed label

added scoped label and automatically removed label

Pass it to requires changes since i need to merge new version of 3.15.0

added scoped label and automatically removed label

mentioned in merge request !504

assigned to @msantang78

changed due date to February 11, 2020

Still marked WIP and the jest tests are failing @juanmsolaro

added scoped labels and automatically removed labels

removed due date