CLI fixes and performance improvements

* Don't make separate authentication / log calls (removes two additional HTTP requests)
* Remove compression from phar format (file size increases from 21K to 80K but runs twice as fast)
* Added missing "take" command
* Simplify error messages by hiding stack trace unless --debug is passed.
Merge pull request #24 from mariadb-corporation/cli_fixes

CLI fixes and performance improvements
Add "Add me to Notification List" button for customers.