Rename IMessenger to IEventEmitter to avoid confusion with Message
Rename project Nubot.Interfaces to Nubot.Abstractions
Rename project Nubot to Nubot.Core
Rename project Nubot.Console to Nubot
Add ReSharper disable InconsistentNaming to plugins Models
Renames to match ReSharper rule 'Static readonly fields (private)'
Merge pull request #18 from laurentkempe/feature/refactoring

Several refactorings