refactor (all): remove general and component directories, add models and...

... services directories, add to src/common

Move button and chrome from app/components to app/dashboardView
Move app/general/services to app/services
Move models to a new module and into an app/models directory
Move constants from app/general/services to app/
Move utilities, compareurl, localstorage, iwcConnectedClient, and ellipticalFilter to src/common

Closes #186