Revert "Concerning #665: Visual studio compile error: Matrix<T>: T()"

This reverts commit c45f8150553d3ae73788cedd1d96122172880dac.
automatic documentation update
Merge branch 'develop' of github.com:casadi/casadi into develop
Concerning #665: Enabling CRSSparsity(0)
Concerning #665: Made CRSSparsity(int) explicit and added create function following the convention in SX and MX
repaired link to tutorials
Added example on how to write an Implicit Runge-Kutta integrator
automatic casadibot merge