Allow sorting in block overview

In block overview on:
/admin/block/

• Sort on Block name by default
• Allow sort on (Block name,) Short code and Type by click on the label
• Add facet filter (as on the Integrated homepage, but that one uses Solr, the BlockBundle won't) for Block type
• Add the integrated/page-bundle as suggestion in composer.json
• If the IntegratedPageBundle has been loaded:
• - Add a column "Channels" on the block page
• - Read all pages from the IntegratedPageBundle to find out the channels they are used on and display them
• - Add facet filter for Channel

To get some example records in the IntegratedPageBundle follow these instructions:
Go to Menu - Manage - Channels
Edit a channel (with the pencil icon)
For domains, enter: localhost

Go to Menu - Manage - Connectors
Choose Options - New website configuration

form.config.name: Website 2
form.config.channels: the channel you have chosen
theme: default

Go to Menu - Website - Pages
Choose Options - New
Title: Example
URL: /example

Go to: http://localhost:8080/app_dev.php/example
Choose "Edit"
Choose "+" to add some blocks
--> this will place blocks on pages. A page has a channel, the one that needs to be displayed