[a0.1.3] Bug fixing

Fixed some bugs thanks to beta-testers' feedback!

Changed the design of the "Add a new app" button
Moved personal billing under the "Account" tab
Changes in the product tour to make every button clickable
Sending more information to Intercom about your tests and apps for better outbound
Added more information on verifying app ID when installing Flusk Vault
Added explanation on how Flusk Vault works and how we process your application in order to detect security vulnerabilities
Precision about the time that it will take to make the initial extraction of your application
Added a missing help article about how to find your app ID
You can now delete an application
We now ask for your language in order to provide you with the best customer support
Moved the log-out button to a more appropriate place