Add check and a warning for missing allocations that do not sum to 100%

[ahjames11]

Something like:

ff$AllocationComponents %>% 
  group_by(AllocationMethodID) %>% 
  summarize(PercentValue = sum(PercentValue)) %>% 
  filter(PercentValue != 1)

And then check if nrow() > 0. Issue a warning if so.

Also might want to add an argument to allow "rebaselining" of the allocations to correct. In other words, divide allocations by the sum.