don't blacklist builtin names

it is wholly appropriate for a class to have a `format` trait, or similar, but Config prohibits it.

This just removes that prohibition.
update config builtins test
catch any exception appending output

HTML output can have javascript with errors, etc.

No output should ever raise, no matter what.

closes #3620
Fix `frontend` deprecation warnings in several examples
Store magic test. On MacOSX the temp dir in /var is symlinked into /private/var thus making this comparison fail. This is solved by using os.path.realpath to expand the tempdir into is's real directory.
test AsyncResult.get_dict with single results and invalid input
fix AsyncResult.get_dict for single result

avoids issue with LoadBalancedView, client[0], etc.

Also cleanup the multiple-key test while I'm there,
because it was gross.

closes #3646
Fix, config_file_name was ignored
Merge pull request #3650 from jdfreder/dir_config_fix

fix regression in #3592 preventing default config files from loading
Merge pull request #3648 from jenshnielsen/store_test

Fix store magic test 

On MacOSX the temp dir in /var is symlinked into /private/var thus making this comparison fail. This pull request fixes the issue by using os.path.realpath to expand the tempdir into the real directory.
avoid double-iteration over engine IDs in get_dict
Merge pull request #3649 from minrk/get_dict_single

fix AsyncResult.get_dict for single result

and add tests for single-result and invalid input (multiple results on one engine).

closes #3646
Merge pull request #3647 from mspacek/frontend

Update `frontend` imports in several examples
Merge pull request #3585 from minrk/config-line

don't blacklist builtin names in config
Merge pull request #3621 from minrk/htmlerror

catch any exception appending output

HTML output can have javascript with errors, etc.

No output should ever raise, no matter what.

closes #3620
Remove inprocess_qtconsole.py
Merge pull request #3652 from mspacek/inprocess_qtconsole

Remove old `docs/examples`
Merge remote-tracking branch 'upstream/master'