REF Replace hardcoded IDs with pseudoconstants in activity form

[mattwire]

Overview

Replace hardcoded action, activity type and activity status IDs with constants/pseudoconstants

Before

More fragile code

After

Less fragile code

Technical Details

Standard replacements

Comments

[civibot]

(Standard links)

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[eileenmcnaughton]

@colemanw's feedback addressed & I rechecked & it seemed all good