Revert "Rename GridTrial.js to JS/GridTrial.js"

This reverts commit c993c5e9f3e37dd08eb2212a59496d5f8be59963.
Revert "Revert "Rename GridTrial.js to JS/GridTrial.js""

This reverts commit abeb47a9aa50586b0f2a58f4a7f2a1a2303af589.