[bug 1025925] Change file names
[bug 1025925] Change all instances of fjord.analytics.tools to fjord.analytics.utils

This changes all references of the former fjord/analytics/tools.py file to reference the currently fjord/analytics/utils.py file.
[bug 1025925] Change instances of of util relating to fjord/base/util.py
Merge pull request #355 from aokoye/1025925-utils-consistent

[bug 1025925] - Make utils a consistent file name