Component separation

[KonstantinGasser]

While thinking about next features for scotty I noticed that the pager component was simply doing too much which was unrelated to paging the logs. The pager would also implement logic to format and brows the logs... As such I started separating the components and smarten up the App component.

Logic now:

App:

• decides what to show, propagates messages from the multiplexer to the current active view.
• listens for user input and invokes views accordingly

Pager:

• only deals with reading latest N items from the buffer and displaying them

Formatter:

• only deals with formatting a log and allows to brows through the logs