Add beta to the course4 box at studio.code.org.
Also properly loc the 'beta' string, and add some space for extra line of text for some locs.
Tested with extra long strings for header; they will ellipsis correctly for both beta & non-beta courses.
Center the beta text in its little grey box.
Centralise course beta? check, even for code that doesn't have a Script object.
Merge pull request #852 from code-dot-org/tallboxbeta

Add beta to the course4 box at studio.code.org.
code.org translations 12/12
Automatically built.

commit ceb1d6dc55b63a7ab24731ed3d2c0551c4185dca
Author: Tanya Parker <tanyacparker@gmail.com>
Date:   Fri Dec 12 17:14:45 2014 -0800

    code.org translations 12/12
hoc.com translations 12/12
update hoc.com danish and albanian translations
remove sign up your event button from hoc.com i18n
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
Dropox and Gsheet changes
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
DTT