Progress: add table markup, populate user history information, fix time-related issue...

Progress: add table markup, populate user history information, fix time-related issues, and other fixes

Add basic support for generating table markup.
- This might be extra unnecessary code, but then again it allows for the functions to be extended so that <table> could potentially be replaced with <div>.
- Some of the markup tags are being renamed to improve readability.

Build a basic history information using the table markup.
- This is initially created as an example/concept and I intend to come back and finish it in the future.

Functions like s_get_date() should render localtime from a UTC timestamp, instead of UTC time from a UTC timestamp.