update image links and alt text
switch underscore to dash in img src
typo fix
Fix "What's new" text - has question mark, unwrapped by link.
Making 'Learn More' on front page a single string.
Taho-LAFS --> Tahoe-LAFS

via https://duck.co/forum/thread/6480/minor-typo-in-about-taho-lafs-should-ve-been-t
Reverting What's new! token.
Tagging 'More DuckDuckGo?'
Merge pull request #69 from duckduckgo/zac/fixtahoe

Taho-LAFS --> Tahoe-LAFS
Merge pull request #68 from jbarrett/fix-learn-more

Fix "learn more" token
Merge pull request #67 from duckduckgo/zaahir/ddh-images-updates

DuckDuckHack: Update IA examples for redesign