Fixed display issue in the graph viewer
Fixed issue when loading the bundle storage
The asset contained in a bundle can now have the same name (but must be of different type)
Added a message displayed at server startup for DevMode
Removed unused extra
Refactored the way the Dandelion context is initialized and injected
 * Refactored the configuration loading. All configuration properties are now stored in the Configuration instance. All configuration properties are loaded in order of priority : system, filter param, dandelion.properties. Closes #7
 * The dandelion.properties file is now always cleared
 * Renamed DevMode by DandelionMode and refactored its initialization
 * Cleaned some utilities
Improved the WebjarLocator
The WebjarLocator can now serve assets from JAR (only if using the Servlet 3.x API) or reads and caches the asset content (if using the Servlet 2.x API)
Added new JarLocator
This locator can now serve assets from JAR (only if using the Servlet 3.x API) or reads and caches them (if using the Servlet 2.x API)
Upgraded Webjars locator
Updated the EhCacheAssetCache due to recent changes