Dashboard Performance - Handle Unnecessary Prop Changes

### Background
Components can rerender unnecessarily when they are passed the same props but React computes them to be different due to how react computes prop changes. The majority of the components in the app that re-render are called but unnecessary prop changes. These might be caused by things like using anonymous functions, or by creating a new style object in a render loop. See [this explanation](https://medium.com/welldone-software/why-did-you-render-mr-big-pure-react-component-part-2-common-fixing-scenarios-667bfdec2e0f) from the WhyDidYouRender library.

### Components to investigate
- [ ] `OverlayController`
- [ ] `TypeAheadDropDown`
- [ ] `DashboardRoute`
- [ ] `TimeRangeDropdown`