Added org todos and agenda to home screen

[tonyday567]

replacing #3720

[robbyoconnor]

👍

[syl20bnr]

Please can you break this into sub-functions :-)

[tonyday567]

@syl20bnr refactored. I'm not very experienced with elisp - I used a 'loop for collect' but wasn't sure if this is a common idiom. If there's any other improvements or tips, happy to incorporate.

[syl20bnr]

Thank you 👍
There some rough edges with it:

• the point jumps to EOF, it is caused by (require 'org-agenda), I did not dig further
• There are some errors with org-bullets-mode but it may be specific with my configuration

Cherry-picked into develop branch, you can safely delete your branch.

[Andre0991]

@syl20bnr The org-bullets-mode thing is an upstream problem: #4793

I don't know if the fixed version is already in the org repo.

[fintelkai]

I like the idea of this but many of my todos and agenda items have links (to emails in particular) in them and since the spacemacs home buffer is not an org buffer, the links aren't fontified the way they would be in an org-mode buffer. That kind of makes this ugly and not so useful.