Story #2 & #3 Add experiments on basic panel and grid panel

1. Re-set appFolder from absolute path to relative one.
2. Add code in LabControl to dynamically create panel.
3. Add new experiment data in json file
4. Add style that required by ArrayGrid
5. Add new field in Experiment model.
6. Add padding in document panel.
7. Hide root node in tree navigation.
8. Remove unnecessary requires.
9. Add experiments of Basic panel using and grid  panel using array
data.