class.api.php: In remote api calls, allow referer and useragent to be set.

[aydun]

Overview

Update api/class.api.php to allow referer and useragent strings to be specified in the curl calls.
Some software (eg WordFence) blocks call without referer and useragent. This change allows these values to be set.

Before

referer and useragent cannot be set.

After

referer and useragent can be set.

Technical Details

This file is not used by core but is copied into some extensions. The change has no effect until copied by extension authors.

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[eileenmcnaughton]

test this please

[eileenmcnaughton]

@seamuslee001 this seems fairly neutral to me - thoughts?

[eileenmcnaughton]

@kcristiano @lcdservices both of you gave this the thumbs up - do either of you want to say 'please merge this' ....

[kcristiano]

@aydun I took a look at reviewing and testing. Do you know of an extension that I could use to test with the new params?

[seamuslee001]

This looks fine to me merging