Fix/309 ajv compile frame schema error

[Vantoine2019]

This PR addresses the issue #309 by

• adding the ajv schema compilation error message to the console
• removing the capitalization errors on type properties

Expected behavior

• [x] The exp-lookit-instructions-video frame should not produce this console error.
• [x] If a frame's schema has not been specified correctly, the console error should provide more detail to make it easier to identify the relevant parameter(s).

Additional information

Depending on your preferences, it would also be possible to separate the console.log into two separate messages e.g.

catch (error) {
    console.group('ajv compile error');
    console.error(`Failed to compile frameSchemaProperties to use for validating researcher usage of frame type '${this.get('kind')}'.`);
    console.error(`Compile error message='${error.message}'`);
    console.groupEnd();
}

[becky-gilbert]

@Vantoine2019 thanks so much for this contribution! ❤️ Looks great, and thanks for adding the error details to the console message. I'm happy with just adding it all to the same message, as you've already done here.

I'll tag CJ and Melissa for reviews.

[becky-gilbert]

@mekline I'm adding this to the current shape with the idea that it can be added to the next EFP release (in which we do away with Pipe).