feat(lib/logging): A winston wrapper that saves module context
chore(logging): using kernel-logger in index and config-builder
feat(logging): core logger plugin
fix(models/User): remove pre-save message sanitization

Because it was removed from validator library and because alterng user
data before saving is not a good idea, sanitization should be performed
by presentation layer
fix(model/Group): remove pre-save sanitization
chore(test/helpers): jshint fixes
chore(test/helpers): don't run kabam if port isn't specified
feat(logging): using intel for configurable hierarchical logging
chore(version): 0.2.5
fix(model): getForUser with limit and offset work properly
fix(socket-io): send to proper channel for list rooms
feat(user): disabling user.root checking
chore(package): bump version to 0.2.6
chore(config-builder): temporarily add kabam-plugin-chat-xmpp default config variables
minor fixes on group-manager; introduced promise-returning User#can as wrapper of Group#isAuthorized
refactor group-manager: added mongoose-schema-extend for Group models to extend a base schema
fix(Readme): fix the hello world example
refactor group-manager: added mongoose-schema-extend for Group models… …
feat(config): config schemas
fix(config): fixing plugin disabling