added :focus states to badges and button

In a similar way to the hover-state I added :focus-states for keyboard
users
Moved dml-speech after wrapper box

This solves GH #20 without adding a z-index and creates a more semantic
document with the "want to know more about DML Badge competition" text
after the "What are Open Badges?" introduction.
closing <b> tag
Merge pull request #22 from icaaq/copywriting

added :focus states to badges and button
Merge pull request #23 from icaaq/move-dml-speech-after-wrapper-box-20

Move dml speech after wrapper box 20
Merge pull request #24 from mozilla/copywriting

synch copywriting and development
Merge pull request #25 from mozilla/development

dev changes to copywriting
change user to earner in styles as well
Merge pull request #27 from mozilla/development

Sync copywriting & development
Trivial push to test commit hook
Merge pull request #28 from mozilla/development

test commit hook
de-italicize DML bubble
Merge pull request #29 from mozilla/copywriting

sync copywriting and development
Removes unused html-elements for IE

.bad-ie is never used in the css. No need to add these conditional
comments if they are not used.
Merge pull request #31 from icaaq/removes-cc-html

Removed unused html-elements for IE
closes #16; add obvious backpack link to front page
adding legal faq first pass
adding MPL link to legal faq
beginning of attempt to make stylesheets less painful; reorganizing sections
pulled out global h1 style