LAlmond src

increasing max error allowed
changing needed concentration gradient
trying to get rid of oscillation in Pv. Works when leaf max out storage is more or less fixed to value around 0.02, when higher oscillation are back even though they are in a very small range
Allow 3rd decimal change in leaf SLW in parameter window

Adding docs
Allowing pri.lc.k of leaves to decrease by 0.95 steps if pri.i > gr
Changing alometric relation for leaves area length ratio

First commit after previous code problem
Started from Davis work, changed source and sink functioning
Moved setting of most e and c to update_segment so it is set depending on the previous state of the plant and folding-unfolding process try to find a solution to the system

Initial commit