Better homepage

[amedott]

I hope this is vague enough title because there are two things I think could be improved about Yark's homepage (when viewing the webpage anyway)

1. List the channels that are "available" on the homepage, or at least "recent videos" instead of just a searchbar.

2. Speaking of search bar, is there a way to turn off case-sensitivity? (i.e. searching `chinozo` in lowercase brings nothing, but `Chinozo` with propercase C brings up archives properly.)

[Owen Griffiths]

Closing as it's not applicable to the #105 gui rewrite because it has a nice new homepage