Update ZeLib.js to 1.1.a

[Rewrite] Continue rewriting of library
[Add] Testing unit with qunit.js (see qunit.html)
[Add] date.toString new feature
[Add] export table to csv (download with no server request)
[Add] repart function : return a 2-dim array with values and theirs quantities
[Add] Options for math object (only used in repart function at this time)
[Add] math.variance() can return an %-value
[Add] p-value test
[Add] Choice of normality test ('kolgomorov' or 'pvalue')
[Add] getting hash in url with options
[Add] getting full url in url.get
[Add] English translation in dates.getMonth
[Add] Choice of language in dates.getMonth
[Add] Choice of date in string FR
[Add] About function
[Add] UI creation abilities with options - div + call fn.tableau functions
[Fix] UI param for interaction -> _ZeLib.ui now in _ZeLib.options 
[Fix] math.repart function
[Fix] page.cookie function -> bad result when multiple cookies
[Fix] Graphs init -> clone call was outdated
[Fix] JS date to FR date string -> 10- numbers whith '0'
[Fix] bad function call in mediane, LCI and LCS calc
[Fix] [step 1] random 'script is not responding'
[Update] Rewriting behavior of url functions 
[Update] Tablesorter support in <table> generator -> just give options
[Update] array sort function
[Update] dateDiff : added option for select type of diff
[Rename] function 'moyenne' to 'avg' 
[Rename] object 'export' from 'csv' to 'exp' -> cause a bug in IE7 (at least)
[Removed] Google Chart API
[Removed] old date/time convertion functions
[Deprecated] math.variance_percent function -> will be removed in next update
[Syntax] switch tabs to spaces (4)