Move PRs here

[markotoplak]

We decided to keep the docs in a separate repository, here.

So, here are the old PRs that should instead be applied onto this repository. In most of them, screenshots need to be retaken and stamps.

By @borondics:

• Updated File widget documentation orange3#6966
• Updated Datasets widget documentation orange3#6967
• Updated Data Table documentation orange3#6968
• Updated Paint Data widget documentation orange3#6977
• Updated Data Info widget documentation orange3#6978
• Updated Colors widget documentation orange3#6981

By @ajdapretnar:

• [DOC] Visualize documentation update orange3#6993