Changes base on @gvwilson comments

* Avoid duplicate lines in HTML pages with layout and CSS
* Avoid import inside functions
* Warning user that the badge already in version 1.0.0
* Fix typo: backing => baking
* Avoid dict.key()
* Add words about Anaconda
Update all badges to version 1.0.0

Just run

    $ python bin/badge-update.py -w \
    badges/creator/* badges/instructor/* \
    badges/organizer/*