Style components

[itsevalieu]

• App
• ExoplanetList
• ExoplanetItem
• ExoplanetTransitGraphs
• OCGraph
• DurationGraph
• EpochGraph
• TransitObservations
• UserTransitObservationsList
• CommunityTransitObservationsList
• TransitObservationItem
• Button
• Header

[itsevalieu]

Wireframes: https://www.figma.com/file/Y7uXKfpOyBt2T0gKwYUkqdDh/Planet-B

[itsevalieu]

@sugarsyntax when working on this issue, we can name the branches like: issue26-component-name

[itsevalieu]

I'll need to work on the exoplanetlist and exoplanetitem to test the db for now so I'll go ahead and style those too @sugarsyntax