[personal-api] user should now provide his personal API key

Conflicts resolved on rebase with master:
	addon.xml
	resources/lib/wunderground.py

 * fix WAIK = user input not -1 char else is invalid
dont strip any characters from user api key else is invalid.

* fix location input in settings never become usable
with this you can actually input new locations

* fix no base64 else user needs to encode api key
ensure user entered api key is as user gets it from weather underground.
Else user needs to base64 encode the api key before entering it in the
addon.

* bump addon version and update changelog