#1806 - Fix import of "Radio"-style custom fields using option "label"

#1816 - Legacy support for matching custom field options by label

#1822 - Fix missing newly created activity types from the dropdown on the new activity form

Fix issue with building smart groups when  is empty

#1823 Fix building the Price Field visibility options

Fix payment instrument bug by using correct payment instrument

Per https://github.com/civicrm/civicrm-core/pull/17589 it is necessary that we do NOT pass the wrong payment_instrument_id
to the payment processor. BUT we have to provide accurate defaults for manual payments. This is a narrower fix than

- back office membership form
- back office participant form
- back office contribution form

and in all cases the Manual processor still loaded correctly. I don't feel I can say this is the last fix in this
area but it stands alone as a sensible fix to do and also one that should address the immediate issue.

Note there is some weirdness in a second function in EventFees - that function should GO IMHO - but I have not yet reached it in
UI testing to confirm if other changes need to be made.

[REF] Fix unit test failures on MySQL 5.6 due to Custom Field table being created without Dynamic Row Format

Fix unit test failures on MySQL 5.6 due to Custom Field table being created without Dynamic Row Format

Add in deprecation notice and status check for a money value format co…

Dedupe performance - hard-remove financial_item from list of dymnamic  refs to contact table

Add in depreation notice and status check for a money value format configuration other than the default

Update to include issue link

Update to use CRM_Core_Error::deprecated function and mention deprecation notice on settings page

QueueTest - Be more forgiving about slow execution

The `CRM_Queue_QueueTest` is producing failures with the
[TIME_FUNC](https://github.com/civicrm/civicrm-core/pull/17414) option of
`linear:500` (the value currently used in PR test runs) -- which is to say,
it fails when the system runs very slowly (with some 500ms stalling during
execution).

This gets it working under some very slow scenarios:

```
for TIME_FUNC in natural frozen linear:500 linear:1250 prng:500 prng:666 prng:1000 prng:1500 ; do
  export TIME_FUNC;
  echo;
  echo "TIME_FUNC=$TIME_FUNC" ;
  env CIVICRM_UF=UnitTests phpunit6 tests/phpunit/CRM/Queue/QueueTest.php ;
done
```

WP - Change definitions of `cms.root`, `civicrm.root`

CommunityMessages - Define more consistent behavior in the face of slow execution

This passes under some brutally slow scenarios:

```
for TIME_FUNC in natural frozen linear:500 linear:1250 prng:500 prng:666 prng:1000 prng:1500 ; do
  export TIME_FUNC;
  echo;
  echo "TIME_FUNC=$TIME_FUNC" ;
  env CIVICRM_UF=UnitTests phpunit6 tests/phpunit/CRM/Core/CommunityMessagesTest.php ;
done
```

Add release-notes/5.26.1.md

#1681 - Copy-edits on MySQL version notices

* The titles for PHP+MySQL notices should use the same
  capitalization/hyphenation ("Out-of-Date" vs "Out of date").
* Extract some more "%n" variables. Fix one errant variable.
* Reduce floweriness of the "version" / "at least" / "or later" text.
* Make it possible to add/remove the "+" notation without changing
  the ts() message.

[REF] Start to convert Dummy processor to use PropertyBag

Payment PropertyBag - Fix setAmount

#1681 Add in notice about 5.28 Dropping MySQL 5.5 Support

[REF] Remove always NULL param modified_id

#1797 Fix jquery Credit card validation on front end contribu…

Add MembershipType to Api4

Convert remaining Authorize.net test to use guzzle

set boolean fields to false if not set.