Include upload maxFileSize and maxRequestSize.

[rpalcolea]

Hi @graemerocher and @jeffbrown

This is related to #489

Includes upload maxFileSize and maxRequestSize documentation

As suggested by Graeme in #491 (comment) I opened a pull request to add this to the 3.0.x branch and make this change available for Grails 3.x

[rpalcolea]

Thanks for the merge @graemerocher

Do you consider necessary an update to http://docs.grails.org/latest/guide/contributing.html#patchesDoc explaining the way branching model works for future contributions?

I was reading 'Submit Patches to Grails Core' and it suggests to always keep up to date with master. I assumed the same thing for the docs. (I know, it doesn't make sense since the docs on master are for the latest release).

Perhaps adding an explanation that you should open the patch to the branch that corresponds to the release(s) you want to update. For example

• branch 3.0.x -> Grails 3.x+
• branch 3.1.x -> Grails 3.1+
• branch master -> Grails 3.2+

your thoughts?