Increase api timeout for publishing, better error handling for publishing

* Increased the ajax timeout for the publishing 100*1000 milliseconds
* Increase the parsoid http response timeout to 100*1000 milliseconds
* Pass the exception details from parsoid api call to client instead of
  hardcoded string.

Change-Id: I8303db0f6db31fc21ea04a506e40e2fbbcaee891
Merge "Increase api timeout for publishing, better error handling for publishing"