modularizing the big noplacelikehome fxn that puts capture history into MaRK format.
broke species mass standard deviations into a separate function. Also separated calculation of species-level mean and sd mass earlier in the code to avoid repetition and to optimize code speed.
finished cleaning up the noplacelikehome fxn. Reordered code snippets to keept he covarate and the capture history sections together within the function