Add paging to RSS/XML view

RSS view for bugs collection currently lists N ("tempMax") bugs in no obvious order. While there is a way to set the N (http://jira.atlassian.com/browse/JRA-8214), it seems impossible to specify "start" issue, in the same way it is done in the issue navigator.

The reason I ask for this is that I need to download a large set of issues. One thing I can do is to set N high enough and then pray that Jira won't crash or throw OutOfMemory () – and there would be enough time for a prayer, because I'll be waiting at this side of the wire for quite a long time before first bytes come.

What I would rather do, is the set N to a fixed number, say, 100, and fire requests at the server with "start=0", "start=100", "start=200", etc. – in essense, paging through the result set. The response for each step is likely to come quicker and not to harm the Jira instance. (There could be problems with concurrent paging and modifications though...)