Fix new project button alignment

## What does this MR do?
Increases the width of the button/search container to fit all items at smaller screen width. The left side of the row can only have a max of two tabs (All Projects, Shared Projects), so everything can still fit on one line until they resize for mobile

## Why was this MR needed?
The `New project` button wrapped to next line at smaller screen width, breaking the layout

## Screenshots (if relevant)
![Screen_Shot_2016-09-09_at_11.44.27_AM](/uploads/a726208deec6623d9fb62db0a549bf38/Screen_Shot_2016-09-09_at_11.44.27_AM.png)
![Screen_Shot_2016-09-09_at_11.46.29_AM](/uploads/bd8dc911757b14c5fafc4d3849e0b242/Screen_Shot_2016-09-09_at_11.46.29_AM.png)

## What are the relevant issue numbers?
Closes #20310

See merge request !6286