Dark / Light Mode Automatic Toggle Switch / jsdmat 0.4.0

• Added capability to react and incorporate user-driven style changes including lock and release scenarios.
• Added call method to accept user-driven toggle requests ("light to dark" and vice versa).
• Rebuilt mandatory template modification sheet (PAGE_CONTAINER) to comply to new jsdmat object structure.
• Added recommended template modification sheet (style_chooser) to be able to capture user-driven style changes.
• Added optional public navigation entry example to offer a user-driven light-to-dark toggle switch.
• Added check for page visibility to minimize race conditions and optimize behaviour when using multiple tabs.
• New jsdmat object structure, no other global variables needed anymore.
• Added ability to deal with inconsistent / older versions' local storage data.
• Changed local storage parameters, new: lockId, lastLightId, lastDarkId, lastSystemId; discarded: lastId.

Task list for updating previous versions:

1. Replace both jsdmat.js and jsdmat.min.js files.
2. Replace (mandatory) template modification for (PAGE_CONTAINER) in all affected parent styles.
3. Check if you re-entered your style_id combinations correctly in (PAGE_CONTAINER).
4. Add (recommended) template modification for (style_chooser) in all affected parent styles.
5. Add (optionally) public navigation entry for light-to-dark toggle switch according example.