CRM-21454 Add money raised on page contribution widget ajax response

[francescbassas]

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• CRM-21454: Add money raised on page contribution widget ajax response

[eileenmcnaughton]

(CiviCRM Review Template WORD-1.0)

• (r-jira) OK
• (r-test) Missing
• (r-code) OK - just adds another parameter
• (r-doc) Not required
• (r-maint) Arguable, see longer comment
• (r-run) Not required:
• (r-user) OK:
• (r-tech) OK:

I'm going to merge this on balance. In most ways it's pretty harmless - it just exposes another piece of data that has been fetched to the ajax call. My reservation about this is that without a unit test this should be seen as an unsupported or best effort interaction with core. Some one could make changes later that stopped it from working again and that needs to be all on the extension writer, not on core.

However, I think given the triviality of it it's OK to let this through