sort import statements

[prjemian]

To ease code maintenance, suggest sorting import statements. The bluesky community has been discussing code format and this was one of the topics.

There is an isort package that will do this for you. But we could do it manually first.

1. group system imports first, blank line, then local imports
2. in each group, sort alphabetically

Of course, some imports require other actions before them, such as appending to sys.path requires import sys first. That's expected.

[prjemian]

Discuss before modifying code since

These imports can be sorted:

ipython-s6bm/ipython_profiles/profile_s6bm/startup/00-prep.py

Lines 9 to 17 in ab45c8c

	import socket
	import getpass
	import yaml
	import bluesky
	import ophyd
	import apstools
	import numpy as np
	from datetime import datetime

to

 import apstools
 import bluesky 
 from datetime import datetime 
 import getpass 
 import numpy as np 
 import ophyd 
 import socket 
 import yaml 

without causing errors.

[prjemian]

Similarly, these lines (in the print) should be sorted since they are for reference:

ipython-s6bm/ipython_profiles/profile_s6bm/startup/00-prep.py

Lines 32 to 43 in ab45c8c

	os
	matplotlib
	matplotlib.pyplot as plt <-- interactive, using widget as backend
	socket
	getpass
	yaml
	bluesky
	ophyd
	apstools
	numpy
	datetime
	databroker

[prjemian]

This line is not needed:

ipython-s6bm/ipython_profiles/profile_s6bm/startup/00-prep.py

Line 55 in ab45c8c

from bluesky import RunEngine

but we should convert:

ipython-s6bm/ipython_profiles/profile_s6bm/startup/00-prep.py

Line 65 in ab45c8c

RE = RunEngine({})

to

RE = bluesky.RunEngine({})

[prjemian]

Adding previous comment to #9