Improved stretch_body_server --status and --restart UX by providing more info and removing tail logging.

[hello-robot-shehab]

Changes in this PR:

• --restart now restarts --launch if the daemon is not installed.
• -- restart restarts the daemon if it is installed.
• --daemon and --restart do not tail the log. However, the user can now pass --daemon --print or --restart --print to tail the log.
• --status now shows the daemon status too.
• --status now shows the user owning the server.

To test

It might be a good idea to pull in PR100's changes before doing this tests too.. If you see commands hanging, it's because of this.

1. Run stretch_body_server --daemon and observe that the log is not tailed
2. Run stretch_body_server --daemon --print and observe that the log is tailed
3. Repeat 1 and 2 with --restart
4. Run stretch_body_server --status and observe that the daemon status is printed alongside the normal status. Also the normal status has the owning user
5. Run stretch_body_server --uninstall_daemon then stretch_body_server --restart and observe server is launched in the terminal (same as using --launch)
6. Run stretch_body_server --launch in one terminal, and run stretch_body_server --restart in another terminal and observe the first instance getting killed, while a new one is started in the second terminal.

[hello-bharadwaj]

1. Test 1: log not tailed. PASS
2. Test 2: log tailed. PASS
3. Test 3: restart behaves same. PASS
4. Test 4: user printed with a tail log. daemon service status displayed. PASS
5. Test 5: no daemon restart behaves like launch. PASS
6. Test 6: throws an error. FAIL

[hello-robot-shehab]

Ah, number 6 should pass with the fix in #100 I believe because it cleans up stop logic. Thank you for testing Brad!!