Update phpmyadmin.md

spelling nit
moved the "quick/expert section" up top for the impatient types...
FAQ on how to power off a VM
Rename vm-poweroff to vm-poweroff.md
increased importance to 2
Added GA
Merge branch 'master' of github.com:koding/kdlearn
Added mailto link
Limited search to only search page
Tweaked the header text
Removed all caps text
Removed the Q/A, and cleaned up the first-child margins a bit.
Reduced the leftnav left-margin by 5px.
Reverted bottom border position to previous spec.
Leftnav headers are now uppercase
Added "Request a guide" to the leftnav
Removed topnav request a guide from master
Merge branch 'master' into develop
Changed the mailto email on request guide
Added the kdsprite locally.