Move the core of the browserid code into lib/

* This allows the l10n extraction tools to extract strings without traversing into subdirectories and extracting extra strings.
Getting set up for localization.

* Move all major scripts under the lib subdirectory
* add extract_po and merge_po to the scripts subdirectory
Created a create_mo.sh script.
Make sure the widget buttons are localized.

fixes #48
Get rid of the version info at the top of lib/browserid.php

Version info only belongs in /browserid.php
Add browserid.pot to the repo, update the version number to v0.45
Add new user from admin screen/login fixes.

* Allow admins to add new users from admin screen. Set a random, fake password for new users.
* Use the standard wp_signon function to sign users in instead of custom logic.  This requires overriding the password check for users who are signing in using Persona.
* Plus lots of cleanup of function names.

fixes #41
Added backgroundColor support!
fixes #32
Move the contents of the lib directory back to the root directory

* This allows the "Settings" link to show up in the plugins list.
* Update the l10n scripts.
Move the contents of the lib directory back to the root directory

* This allows the "Settings" link to show up in the plugins list.
* Update the l10n scripts.
Move the contents of the lib directory back to the root directory

* This allows the "Settings" link to show up in the plugins list.
* Update the l10n scripts.
Add the ability to select any of the 3 Persona buttons styles.

fixes #34
Bring the Persona button back for comment submission

fixes #38
rename style.css=>browserid.css and login.js=>browserid.js
Fix live events not working on sites with jQuery 1.9+

Fix submitted by @davidmurdoch.

Thanks David!

fixes #45
remove the extra browserid.pot file.

Thanks @KryDos for pointing this out!

fixes #50
Update the README.md file with more contributors.
Add termsOfService/privacyPolicy support.
fixes #17
Cleanup

* use a generic Get_option
* use a generic Print_option_text_input
remove notice from Persona settings page. Fix for 54 issue