[FEATURE] Hide code.pyret.org chroming when embedded

[jpolitz]

Is your feature request related to a problem? Please describe:

Information about CPO accounts and Google Drive are in the CPO UI when it is embedded

Describe the solution you'd like:

Connect to Google Drive and the “Programming as a...” message should hide, along with any messaging about creating and saving programs.

Additional context:

See http://github.com/brownplt/code.pyret.org/