Small changes in our summary dialogs

[rdstern]

@N-thony this should be easy for anyone:

a) In the Prepare > Reshape Data > Summarise > Subdialog we now only tick N-non Missing and Sum as the default. That seems sensible. Nothing to change. In the Describe > Tables > Summarise the default is the mean. I like that too. Nothing to change.
b) But in the Climatic > Prepare > Summarise we still (by default) tick the N-Total as well. Please not. Let's make it consistent with the Prepare > Reshape Data > Summarise.
c) A more important one now. The name (in each case) of the summary is count_non-missing_tmax, etc. This is too long and a pain both in a data frame, and now in the tables. And we use it often. The N-total, that we hardly use, is called count, which is much better.
I suggest we call the count_non_misssing count instead. Than perhaps call the N-total count_all. Or we could be even shorter and have n and n_all. @lilyclements and @N-thony what do you think?
Let's also change count_missing to count_miss, or n_miss?

I like the percentiles. They are called p75_tmax, etc.

[lilyclements]

@rdstern happy for us to rename these variables. I agree they are quite long as it is!

[rdstern]

@lilyclements would you prefer count and count_all and count_miss, or n and n_all and n_miss? Or something else?

[lilyclements]

@rdstern I think count is good - especially since in R they're now using count() as a function instead of summarise(n()) (although the column in R is called n by default - so I'm not against n at all).
What do you think?

[N-thony]

@derekagorhom can you make the change?

[rdstern]

@derekagorhom can you change the current count_non_missing_name into count_name.
Then the current count (which comed from N-total into count_all_name
And count_missing_name, into count_miss_name.

Then @lilyclements I just found a bug, from dplyr, in N-distinct - it gives an error. Could you help, so @derekagorhom corrects that at the same time.