linting core app

[smcoll]

IN PROGRESS

What types of exceptions are we actually trying to catch in these cases?

core/forms.py
  Line: 30
    pylint: bare-except / No exception type(s) specified (col 8)

core/management/commands/reindex_elasticsearch.py
  Line: 43
    pylint: bare-except / No exception type(s) specified (col 12)

core/templatetags/core_tags.py
  Line: 66
    pylint: lost-exception / return statement in finally block may swallow exception (col 12)

Any opinions on how to handle these cases?

core/resolver.py
  Line: 53
    pylint: unused-argument / Unused argument 'private' (col 41)
  Line: 122
    pylint: unused-argument / Unused argument 'private' (col 38)

core/utils/tasks/public.py
  Line: 27
    pylint: unused-argument / Unused argument 'request' (col 30)
    pylint: unused-argument / Unused argument 'state' (col 39)
    pylint: unused-argument / Unused argument 'context' (col 46)

[agjohnson]

If anyone wants to pick this PR up, feel free. @smcoll said he would try to return to this later if not.

[agjohnson]

Moved this to #2911 to finish up work on a different branch.