Add file upload limiter

[scolapasta]

Add to the settings, if no setting, then lo limit.

Make sure it is used my primefaces upload, the API, and the dropbox upload.

[pdurbin]

@raprasad please note that the API already uses DataDepositApiMaxUploadInBytes per #1043 so please update the code and docs to use instead whatever new common (shared between the GUI and API) setting table key you come up with.

Here's how you'd test afterwards: http://guides.dataverse.org/en/latest/api/sword.html#add-files-to-a-dataset-with-a-zip-file

[raprasad]

• rename DataDepositApiMaxUploadInBytes to MaxFileUploadSizeInBytes
• dropbox: use in DatasetPage.java handleDropBoxUpload
• UI: sizeLimit="500000" invalidSizeMessage="File exceeds our limits. Please contact support."
• update sword to use new settings name

[raprasad]

If MaxFileUploadSizeInBytes is found in the settings table, use that number. If not, default to unlimited upload size.

Moving to QA

INSERT INTO setting values (':MaxFileUploadSizeInBytes', '100');

[kcondon]

OK, works, closing. Need to set this is prod to 10GB.