This is a known problem with Webmaster Tools as you have first hand experience when you noticed it before. You can test your own site using firebug and reading the response you get.
Test Your Own Pages
While Webmaster Tools is good it should be noted its not perfect and more than often out of date as it's not interlinked in real time with their indexer or caching service. You can test your own pages if you have Google doubts, simply install firebug and your be able to see from the header messages what your site is returning.
I've just tested your site and can confirm that its work as intended I get 200 with no 301 redirects meaning the infinity loop doesn't exist and something that is clearly wrong with the Google Fetch Bot. You can review the response I got from below.
GET yourcurrencyconverters-tostaky.rhcloud.com 200 STATUS OK
Chances are Google will fix the problem in a few days time so test it then but in the mean time just test it yourself using Firebug.
I've read your post on http://productforums.google.com/forum/#!topic/webmasters/Voqv-_Ts2AE and I can confirm that the index.html also returns a valid response
GET index.html 200 OK
Webmaster Tools is often bugged, outdated, or just plain annoying
As mentioned in the previous question and adding to this one, Google Webmasters, Googles Rankings and Indexing and Even Google cache service are all independent services when one gets updated it can often take many days afterwards to update in Webmaster Tools and in other services.
One small possiblity is that your site is causing a redirect on the trailing end slash, its unlikely but make sure you test the fetch with and without the ending slash to see if theres any different.
Things to Do
As mentioned Google takes time and rather concerning yourselve too much maybe and I hope you don't take offence but maybe you should focus more time on getting your site out of "This site is still under construction! Come visit us again later!" and into a live site, since watching it on Google won't do any good. Simply get on with more construction things and care little about Google.