[phpMyAdmin Developers] Gitter room for GSoC discussions

Hello, I've created a Gitter room[1] for discussions related to Google Summer of Code. We've had several requests from potential students to use this tool, but because we don't use it as a development team this room is running on a trial basis. Since a portion of the student application period involves reaching out to the team and introducing themselves, we thought this was a good opportunity to introduce Gitter to our workflow. This email list will remain the primary communication channel, but students who are more comfortable with Gitter are welcome to use that instead. I've also added a section to the wiki[2] encouraging students to introduce themselves early in the process. Any feedback on these changes is welcome. Isaac 1 - https://gitter.im/phpmyadmin/GSoC 2 - https://github.com/phpmyadmin/phpmyadmin/wiki/GSoC_2018_applicant_guide/_co…