Added legacy database with user table and changed both legacy apps to use it
Changed legacy user class to load user data from db
Created LegacyKernel
Created LegacyKernelListener and register as kernel event listener + add legacy.site_index to config
Disable notices etc. in legacy app (to prevent Symfony error handler to capture them and convert to exception)
Added legacy application link to DemoBundle index view
Symlink legacy application css & images dirs from web/