Refactored the last test suite as each suite should only have one beforeEach. Also eliminated one of the tests since it wasn't really testing anything.

[Security] Bump handlebars from 4.1.0 to 4.6.0 in /assets

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.1.0 to 4.6.0. **This update includes a security fix.**
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/wycats/handlebars.js/blob/master/release-notes.md)
- [Commits](https://github.com/wycats/handlebars.js/compare/v4.1.0...v4.6.0

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Update dependencies.

Fixes to use the correct service url when using the period to retriev…

Add title parameter to turn on/off display of graph title.

Merge pull request #807 from ssoper-usgs/IOW-217_break_up_control_and_charting_code_into_smaller_modules

Iow 217 break up control and charting code into smaller modules

Fix period

Removed hardcoded parameter code.

Oops, loading indicator is not specific to date controls like I thought initially, putting it back in the index

Iow 62 - Add Monitoring Location Name and number to graph output

Added environment variables for STATIC_URL and DEBUG so that these ca…

Added config repo path and credentials

Iow 176 - Image server: support periods

Added new selectors to retrieve the monitoring location name and the agency code and added an option to the attachToNode function for hydrographs to selectively add the site name and number to the graph.