Fixes #270 , #271 , #272 #254 : API request for aggregation

[Achint08]

Fixes #270 ,#271 , #272 , #254 : Implements seperate API request for Aggregation

Changes proposed in this pull request
Separate request for aggregations have been made to get aggregation and avoid search service crash.
Now the aggregation service will work again and
-> Side Bar will work again
-> Show more will work.
-> Pagination will work properly

Screenshots (if appropriate)

Link to live demo (if appropriate):
Checkout here.

**Closes #270 , #271 , #272, #254 **

[mariobehling]

Not sure, what has changed, but now I also see issues on your the test page. Wonder why I have not seen it earlier.

[Achint08]

@mariobehling I will look forward to fix this. Actually , the problem is that sometimes server doesn't respond and then if some variable goes undefined search service crash.

[mariobehling]

sometimes server doesn't respond

The idea for this was to show a loading icon instead of empty areas.

But, how could we know if the server responds or not? Is there a way to see errors? How do you know that?

I am also unclear why this affects the page design.