Security Upgrade - Sanitize JSON data

[leoraba]

The following security concerns must been addressed.

• Sanitize SQON json on query endpoint against SQL injection, specially fieldName and value fields under content.
• Sanitize TSV data before inserting into database.
• Other input parameters in other endpoints, path params, query params, etc.

[justincorrigible]

Editing the description to mark SQON coverage is being addressed in #219