Check for review breaks on review-requests with too many updated diffs

[lucas-noyau-itdev]

When running check for reviews on a review-request that has had its diff updated 25 or more times, the result is:

java.lang.IndexOutOfBoundsException: Index: 25, Size: 25
	at java.util.ArrayList.rangeCheck(ArrayList.java:657)
	at java.util.ArrayList.get(ArrayList.java:433)
	[...]

The problem could be the default max-results of the reviewboard api. Check for reviews uses [reviewboard-URL]/api/review-requests/[review-request-id]/diffs/, which returns an XML with <total_results>26</total_results>, but only 25 items in <diffs><array>[...]</diffs></array>. So when Java tries to get the last item by using the index total_results-1, it breaks.

Might be fixable by using [reviewboard-URL]/api/review-requests/[review-request-id]/diffs/?max-results=200