Corrected dimension stuff in pop_proj for 2-age classes situations
Added cv_env = 0 for fast_paced species

corrected calibration inside DD models

Avoids potential weirds offsets btw "avg trend" and "CI of trend"

Test on 10 scenarios !

+ some minor eolpop-package cleaning

We don't include newborns (age class 1) into the population count.

(+ small correctionsnin shiny)

A%*%N1*(1-h)
to
build_Leslie(s = s*(1-h), f = f)

Exact same results, but easier to understand

(to avoid artificial dilution due to high expected nb of newborns from the SAD)

Also modified "pop_project" functions accordingly