Use largo-modernizr as dependency for citylimits-navigation

[joshdarby]

Changes

This pull request makes the following changes:

• Updates the citylimits-navigation enqueue to use largo-modernizr as a dependency to (hopefully) solve the Modernizr.hasEvent is not a function error on staging

Why

For #39

Testing/Questions

Features that this PR affects:

• Site header

Questions that need to be answered before merging:

• Is this PR targeting the correct branch in this repository?

Steps to test this PR:

1. Make sure everything still works and no new errors are present

[benlk]

We should do this in Largo, as well. https://github.com/INN/largo/pull/1715/files for WPBuddy/largo#1714 defined the function, but if the dependency is necessary, we should make sure it's mentioned in the enqueues.

[benlk]

Reopened WPBuddy/largo#1714 to track that task.

[kaylima]

@josh can you describe how the issue pertains to the logo, in particular? is there any sort of workaround we can do so I can QA that section?

[joshdarby]

@kaylima Largo uses Javascript to place the src attribute on the logo image element in the header.

From what I can tell, somewhere in the new navigation js file there is an issue with a dependency (Modernizr) that is preventing the logo image from being placed in.

A quick work around would be to just take their logo image url (https://citylimits.org/wp-content/uploads/2014/10/CL_logo_768-1-1-2.png) and search for the image element in the page HTML with the header_img class in the deve console and replace src(unknown) with src="https://citylimits.org/wp-content/uploads/2014/10/CL_logo_768-1-1-2.png"