[CDMHUB-49] Update Twitter Share URL

[jessewoo]

Source JIRA card(s) and hubzero ticket(s)

• https://sdx-sdsc.atlassian.net/browse/CDMHUB-49
• https://cdmhub.org/support/ticket/2226?show=419&search=&limit=20&start=0

Brief summary of the issue
Hitting the Twitter button on a resource page, nothing is pulled over to the tweet pop up window.

Brief summary of the fix
Need to update the Twitter sharing URL, more info located here: Stack Overflow Link

Brief summary of your testing

• Go to a resource detail page with the plugin resource-sharing turned on
• Select the Twitter button and click on it to reach a pop up window
• Pop up window should show the resource verbiage to share with everyone or a few on Twitter.

Do the change needs to be hotfixed to any production hubs before a normal core rollout
No

Double check someone is assigned to review the ticket
Yes - Nick and David

[dbenham]

Make a site constant?