v1.1.5 patch RE: prompt formatting.

Apparently EC2 has shorter AJAX polling, so special attention has
to be paid to the propmt.

	1) On initialization the prompt has been changed to only
	display 'Python 2.7.3 ...'.

	2) On subsiquent prompting the 'prompt' event data has
	been conditioned to look for and replace BOTH '... '
	and '>>> '. This is done by sequential str.replace calls.