Major files refactoring - swarming.

Major files refactoring - swarming.

- Split main from handlers declaration for endpoints handlers.
- Remove unnecessary imports.
- Remove APP from mapreduce_jobs, it unnecessary.
- Stop the forced logservice flushing, it's stable now.
- Remove appstats, the new Clout Console Trace features can give meaningful data
  without require intervention from within the app.

R=vadimsh@chromium.org
BUG=

Committed: https://code.google.com/p/swarming/source/detail?repo=default&r=decb219c55a7566c2e3ec7135c3f2d9988ea8383

[M-A, 2015-03-25 14:19:25]

The end goal is to make all 3 applications more similar. I'm sending separate
CLs, starting with Swarming, to make this more bearable but I already wrote the
code for all 3. I'll update my WIP branch with your comments for the other
instances before uplodaing.

[vadimsh, 2015-03-25 21:35:22]

lgtm

https://codereview.appspot.com/216350043/diff/20001/appengine/swarming/main.py
File appengine/swarming/main.py (right):

https://codereview.appspot.com/216350043/diff/20001/appengine/swarming/main.p...
appengine/swarming/main.py:42: frontend =
recording.appstats_wsgi_middleware(frontend)
we should remove it completely. New "Traces" feature in Cloud Console gives same
functionality for free for any GAE app (no need to instrument RPCs from app
side). It can be turned on\off dynamically for a running app.

[M-A, 2015-03-26 13:07:03]

All references to appstats removed.

https://codereview.appspot.com/216350043/diff/20001/appengine/swarming/main.py
File appengine/swarming/main.py (right):

https://codereview.appspot.com/216350043/diff/20001/appengine/swarming/main.p...
appengine/swarming/main.py:42: frontend =
recording.appstats_wsgi_middleware(frontend)
On 2015/03/25 21:35:22, vadimsh wrote:
> we should remove it completely. New "Traces" feature in Cloud Console gives
same
> functionality for free for any GAE app (no need to instrument RPCs from app
> side). It can be turned on\off dynamically for a running app.

Ah, I hadn't realized. It's great, thanks.

[M-A, 2015-03-26 13:39:58]

Committed patchset #3 (id:60001) manually as
decb219c55a7566c2e3ec7135c3f2d9988ea8383 (presubmit successful).

[M-A, 2015-03-26 13:53:17]

On 2015/03/26 13:39:58, M-A wrote:
> Committed patchset #3 (id:60001) manually as
> decb219c55a7566c2e3ec7135c3f2d9988ea8383 (presubmit successful).

 Sorry for the 'Clout' typo in CL description.