III-4834 Load default query from simple array config

[LucWollants]

Changed

• Load default queries from a simple config file containing an associative array. If the config does not contain an entry for the given API key a fallback is done to check UiTID

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Ticket: https://jira.uitdatabank.be/browse/III-4834

[bertramakers]

@LucWollants can you also add the default_queries.php to the .gitignore? Otherwise it will pop up as an untracked file when the initscripts put it in our local setup.

[LucWollants]

@LucWollants can you also add the default_queries.php to the .gitignore? Otherwise it will pop up as an untracked file when the initscripts put it in our local setup.

Good point, I added it in this PR #218