Provide button to open wizard for creating new experiment, which includes:
1) acquire user information
2) create profile folder for user, all data will be stored there.
3) switch user
Gumtree will use the above information to treat the Nexus data generate by SICS, and store analysis result in the user's folder.
The feature needs to be simple and neat.
Will be out of date if our user management paradigm is ready.