Update versions for current release
Update available versions for each channel; amend download table

The release notes row no longer makes any sense at the bottom
of the download table, as the major version for Android beta
is different from the major version for Tizen beta. Moved it
into a bulleted list instead.
Merge pull request #86 from townxelliot/update-versions

Update versions
Remove download links from channels viewer

The download links don't point at valid downloads any more;
and the version available for download doesn't correspond to the
channel/branch anyway (e.g. the branch shown for Tizen beta is 5
but we don't have any Tizen beta 5 downloads).
Remove inline styles from channels viewer HTML
Fix broken internal anchor on Downloads page
Merge pull request #87 from townxelliot/channels-viewer-edits

Channels viewer edits
Remove Tizen beta downloads from Downloads table
Merge pull request #88 from townxelliot/remove-tizen-betas

Remove Tizen beta downloads from Downloads table
Squeeze left-hand column to 220px

This necessitated making the title of one of the Tizen IVI
tutorial pages shorter.
Basic resizing + left menu hiding
Get menu collapse working when screen <= 600px
Don't show menu collapse button on home page
Add drop shadow around menu when page is narrow
Add graphic for collapsed menu button
Fix some CSS which broke during merge