Fixed failures by increasing have_at_most values

 1) advanced search pub info subject 'soviet union and historiography' and pub info '1910-1911 pub info 2011
     Failure/Error: resp.should have_at_most(126500).results
       expected at most 126500 results, got 126501
     # ./spec/advanced_search_spec.rb:345:in `block (4 levels) in <top (required)>'

  2) Chinese Han variants history research with space behaves like both scripts get expected result size title search has between 1800 and 1900 results
     Failure/Error: resp.should have_at_most(max).results
       expected at most 1900 results, got 1901
     Shared Example Group: "both scripts get expected result size" called from ./spec/cjk/chinese_han_variants_spec.rb:58
     # ./spec/support/shared_examples_cjk.rb:8:in `block (2 levels) in <top (required)>'

  3) Chinese Han variants history research with space behaves like both scripts get expected result size title search has between 1800 and 1900 results
     Failure/Error: resp.should have_at_most(max).results
       expected at most 1900 results, got 1901
     Shared Example Group: "both scripts get expected result size" called from ./spec/cjk/chinese_han_variants_spec.rb:58
     # ./spec/support/shared_examples_cjk.rb:8:in `block (2 levels) in <top (required)>'