Update ZeLib.js to 1.2.20130731 [Maths Update]

[Add] [Object] New process object -> contain all functions linked to indus process
[Add] [Object] New mat object -> contain all functions linked to matrix
[Add] [Math] Constants
[Add] [Math] Log10 function
[Add] [Math] sum of array values
[Add] [Math] isFinite test
[Add] [Math] Linear regression line calc
[Add] [Math] Phi approx calc for normal law
[Add] [Math] Normal law approx calc
[Add] [Statistics] Quantile estimation calc - 3 methods
[Add] [Statistics] Calc Normal inverse cumulative distribution
[Add] [Statistics] Draw qq-plot graph
[Add] [Graphs] simple plot function (x, y)
[Add] [Arrays] merge two arrays in one + option for regression line
[Remove] [Maths] Variance per cent specific function (deprecated in 1.1.a)
[Remove] [Maths] 'loiNormale' function -> remapped to statistics function