Provide content blocks in one view

Problem/Motivation

There are at least three blocks listing content related to a user for the Content dashboard: "my drafts", "my latest content" and "content edited by me". These are very similar and should be provided by the same View rather then in three different ones.

As discussed at the contrib sprint: We should provide them in one View (rather then providing several different one by default) .
It would also be useful to use consistent machine names for these blocks.
This way it would also be easier to display them consistently.

Proposed resolution

• Replace the existing view (my drafts) and add the blocks proposed in issues #3327580. and #3327580
• Use a machine name starting with "dashboard" to make it clearer for future sitebuilders
• Link each block to the Content admin page instead of each having their own pager or scrollbar

Remaining tasks

• Create patch
• Write tests

User interface changes

This provides new blocks

API changes

None

Data model changes

None