Input data in random statements

[matteo-cristino]

A lot of statements in zencode_random.lua take data in input directly from the statement without looking in Zenroom data. These statements acts totally different from all the other zencode statements. Maybe also in this case a

local data = mayhave(data_name) or data_name

should be used.

[matteo-cristino]

Maybe also print a warning in the statement

When I create the array of '' random numbers modulo ''

when the chosen modulo is bigger than 65,535 (since we are using unsigned int16).
For example I was trying to create a random number between 0 and 10800000 but I was only getting "small" numbers without knowing why.

[matteo-cristino]

The above statements should works with big integers instead of float to increment the range of random numbers.

[matteo-cristino]

fixed in #734