Removed adminmenubundle and related

* MenuBundle is not readyfor its administration
* Some code fixes
Renamed all namespaces from Admin\ to Elcodi\
Updated default table name
Removed cache dir and log dir from repo
Update .gitignore
Added .formatter.yml file

* Also applied use statements sorting process
* Updated AppKernel (Deleted instanciation of MenuBundlei)
* Updated composer.json file
WIP: Product variant implementation
Removed hardcoded parameter in url()
WIP: Edit/View variant component
WIP: controller annotations
Changed namespace prefix