refactored webpage to url
removed 'e' from list of MathInline built-ins as it can be often used for reversal potentials. In almost all cases exp(...) will probably be used and in the rare cases where 'e' is not the base of an exponential exp(0) can be used instead
removed random namespace from mathinline random distributions
added random distributions to list of built-in maths functions
Merge branch 'updated_spec'