update: External Project Links

This updates the links to all external projects used in osTicket.

README.md

@@ -99,19 +99,19 @@ file for the gory details of the General Public License.
 
 osTicket is supported by several magical open source projects including:
 
-  * [Font-Awesome](http://fortawesome.github.com/Font-Awesome/)
-  * [HTMLawed](http://www.bioinformatics.org/phplabware/internal_utilities/htmLawed)
-  * [jQuery dropdown](http://labs.abeautifulsite.net/jquery-dropdown/)
-  * [jsTimezoneDetect](http://pellepim.bitbucket.org/jstz/)
+  * [Font-Awesome](https://fontawesome.com/)
+  * [HTMLawed](https://www.bioinformatics.org/phplabware/internal_utilities/htmLawed)
+  * [jQuery dropdown](https://labs.abeautifulsite.net/jquery-dropdown/) (Project Deleted)
+  * [jsTimezoneDetect](https://pellepim.bitbucket.org/jstz/)
   * [laminas-mail](https://github.com/laminas/laminas-mail)
-  * [mPDF](http://www.mpdf1.com/)
-  * [PasswordHash](http://www.openwall.com/phpass/)
-  * [PEAR](http://pear.php.net/package/PEAR)
-  * [PEAR/Auth_SASL](http://pear.php.net/package/Auth_SASL)
-  * [PEAR/Mail](http://pear.php.net/package/mail)
-  * [PEAR/Net_SMTP](http://pear.php.net/package/Net_SMTP)
-  * [PEAR/Net_Socket](http://pear.php.net/package/Net_Socket)
-  * [PEAR/Serivces_JSON](http://pear.php.net/package/Services_JSON)
+  * [mPDF](https://github.com/mpdf/mpdf)
+  * [PasswordHash](https://www.openwall.com/phpass/)
+  * [PEAR](https://pear.php.net/package/PEAR)
+  * [PEAR/Auth_SASL](https://pear.php.net/package/Auth_SASL)
+  * [PEAR/Mail](https://pear.php.net/package/mail)
+  * [PEAR/Net_SMTP](https://pear.php.net/package/Net_SMTP)
+  * [PEAR/Net_Socket](https://pear.php.net/package/Net_Socket)
+  * [PEAR/Serivces_JSON](https://pear.php.net/package/Services_JSON)
   * [php-gettext](https://launchpad.net/php-gettext/)
-  * [phpseclib](http://phpseclib.sourceforge.net/)
-  * [Spyc](http://github.com/mustangostang/spyc)
+  * [phpseclib](https://phpseclib.sourceforge.net/)
+  * [Spyc](https://github.com/mustangostang/spyc)