standardize names in output estimates tables

[eosnas]

Standardize the naming convention in the output estimate tables. Have a consistent case and use the same name for variable that are the same type of estimate, e.g., itotal in the "combined" data frame should be the same in the "output.table" data frame. Now it is named itotal.est. I would remove the ".est" suffix. Do this for all data sets. Also, give the data sets meaningful names. "output.table" doesn't really mean much.

names(AKaerial::YKGHistoric$combined)
[1] "Year" "Species" "total" "total.var" "total.se"
[6] "itotal" "itotal.var" "itotal.se" "ibb" "ibb.var"
[11] "ibb.se" "sing1pair2" "sing1pair2.var" "sing1pair2.se" "flock"
[16] "flock.var" "flock.se" "area"
names(AKaerial::YKGHistoric$output.table)
[1] "Year" "Observer" "Species" "total.est" "itotal.est"
[6] "ibbtotal.est" "sing1pair2.est" "flock.est" "var.N" "var.Ni"
[11] "var.Nib" "var.Nsing1pair2" "var.Nflock" "SE" "SE.i"
[16] "SE.ibb" "SE.sing1pair2" "SE.flock" "area"