"Rename Stage" instead of "Edit Name"

Author: @akshoop

- I didn’t like the term “Edit Name” in our stage edit view. Changed it
to “Rename Stage”
- Also fixed the Java Doc Copyright in TaskManager. RAY wang, not Ryan
Wang.
Merge pull request #69 from SixAppeal/shoop_editStageName

"Rename Stage" instead of "Edit Name"