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Fixed fatal error for Event Participants custom search if price set field option is disabled after a registrant has already selected it

Fix test failure and parametise queries

core/issues/74 - 'Price Set Details for Event Participants' gives DB error if the price fields are disabled.

This is a simple administrative update to the headers. It was generated with the command:

```
rgrep '| CiviCRM version 4.7' CRM/ Civi ang api bin extern install/ settings/ templates -l \
  | xargs sed -i'' "s/| CiviCRM version 4.7/| CiviCRM version 5  /g"
```

Tthe inclusion of `|` aimed to avoid matching any non-header text (e.g. inline docs that
mentioned the version incidentally). But then I did a looser search and for just

```
rgrep 'CiviCRM version 4.7'
````

and manually patched the remainder.

Note: I'm not really keen on doing this every month, so I relaxed the header
statement -- instead of `CiviCRM version 5.0`, it's just `CiviCRM version 5`.

https://issues.civicrm.org/jira/browse/CRM-17383

The automated cleanup sometimes screws with long, commented
code blocks and with statements that end "));", so I reviewed
the diff manually fixed any egregious examples.

CRM-10859 rename BAO classes that dont follow naming std (at least those for which API tests exist :-)