1.2.0 several bugs fix and enhancements

[joglomedia]

This PR contains several bugs fix and enhancements, should be released as 1.2.x.

Bugs Fix

• PHP FPM config error ( issue PHP FPM config error #6 )
• Swap file creation failed ( issue Error creating swap file #7 )
• Fail adding MariaDB repositrory ( issue Error when adding MariaDB repositry #8 )
• Lemper CLI prints cluttered variable ( issue Lemper CLI Manage prints out cluttered variable #9 )
• Lemper CLI passing empty webroot directory ( issue Lemper-CLI Create, should not passing empty webroot directory #10 )
• MariaDB installation doesn't export variable correctly ( issue After install, MariaDB (MySQL) database credentials missing from report text #14 )
• Lemper CLI create vhost causing Nginx config error ( issue Nginx config error: nginx: [emerg] duplicate listen options for [::]:80 #20 )

Enhancements

• Basic Authentication for securing PHP-FPM & Nginx Mod_PageSpeed statistics ( issue Basic Authentication for securing PHP-FPM & Nginx Mod_PageSpeed statistics #11 )
• Set default webroot parameter for Lemper CLI create subcommand ( issue Set default webroot parameter for Lemper CLI create subcommand #17 )
• Swap size optimization ( issue Swap size optimization #21 )
• Plus some functionality enhancements included