Update ZeLib.js

[Rewrite] Continue rewriting of library
[Add] Testing unit with qunit.js
[Add] date.toString new feature
[Add] export table to csv (download with no server request)
[Update] Rewriting behavior of url functions 
[Update] Tablesorter support in <table> generator -> just give options
[Removed] Google Chart API - no time for this at the moment...