Fixed multiple failures: increased have_at_most values

  1) Chinese Everything history research no spaces behaves like both scripts get expected result size everything search has between 5220 and 5530 results
     Failure/Error: resp.should have_at_most(max).results
       expected at most 5530 results, got 5532
     Shared Example Group: "both scripts get expected result size" called from ./spec/cjk/chinese_everything_spec.rb:48
     # ./spec/support/shared_examples_cjk.rb:8:in `block (2 levels) in <top (required)>'

  2) Chinese Everything history research no spaces behaves like both scripts get expected result size everything search has between 5220 and 5530 results
     Failure/Error: resp.should have_at_most(max).results
       expected at most 5530 results, got 5532
     Shared Example Group: "both scripts get expected result size" called from ./spec/cjk/chinese_everything_spec.rb:48
     # ./spec/support/shared_examples_cjk.rb:8:in `block (2 levels) in <top (required)>'

  3) Default Request Handler q of 'Buddhism' should get 8,500-10,675 results
     Failure/Error: resp.should have_at_most(10675).documents
       expected at most 10675 documents, got 10677
     # ./spec/default_req_handler_spec.rb:8:in `block (2 levels) in <top (required)>'

@ndushay