Add feature to import block lists from the internet.

[bunsenmurder]

Is your feature request related to a problem? Please describe.
No.

Describe the solution you'd like
The user should be able to click a button and import diffrent types websites to put into a block list. These lists should be common distracting sites such as the ones listed here or other website categories a user might want to block. The sources for these lists should either be from a specific sources online or curated by the NoSurfin project.