Revert "Delete MAVSite.sln"

This reverts commit dedce17358c74f10c822ff41e8e380c3b7587d83.
Revert "Revert "Delete MAVSite.sln""

This reverts commit 73c16d3a614f34445e352cc708810161df6782cd.
Revert "Revert "Revert "Delete MAVSite.sln"""

This reverts commit 5e529df13d9ca806705dff3ba743bd890f34b58b.