bare Rails app
add base gems, setup bootstrap and create default controller
add base models (provider, entity, metric)
add associations and base methods
add collectd plugin
clean collectd provider, add attr_custom method
add constraints and scope to models
add basic UI
rename EntityMetric to Instance, associate Provider with Instance
add VizirDSL and use it in Provider#get_metrics
rename loading methods in provider and factorize Provider#load_entities
add method to override metric properties with DSL at instanciation
remove Metric after_find callback store volatile properties in details attr
add rake tasks for basic bootstrap
add evil vizir:cleanup task
add validations and methods to Instance + minor fixes
update view/controller for new model
add sqlite3 in dev, remove instance validation on metric_id
add better_errors gems
fix instance constraints and clean metric import