Capitalized references of description in store and updated affected unit tests

[rmanaem]

This PR includes the fix for the bug outlined in #384.
Changes include changing description references to Description in

• index.js
• store-mutation-initializeDataDictionary.cy.js
• store-getter-getColumDescription.cy.js

Closes #384

[jarmoza]

@rmanaem Can you also write a test for the below condition from #384 ?

The component test for the column-linking-table should fail if 1) description text exists for a data table column and 2) it is not visible in the 'description' component column

So in other words, the failure should be a passing test.

[rmanaem]

@jarmoza I'm not quite sure what that test would look like since there already is a test checking if the column descriptions are correctly displayed in column-linking-table.cy.js.
I think the original description of the #384 issue was written under the assumption that the bug was coming from column-linking-table component however, the bug was found in the store.

Perhaps a test with mock data having description as their property instead of Description and expecting the description not to be displayed?

[jarmoza]

Perhaps a test with mock data having description as their property instead of Description and expecting the description not to be displayed?

@rmanaem That would work given our current code. If we do some kind of forced capitalization later on, we can readdress.

[jarmoza]

In light of our discussion re: a new feature to enforce capitalization (see #316, #393), we shouldn't need the test above.

So, 👨‍🍳