Fixed multiple failing tests: increased have_at_most value

  1) advanced search subject and keyword subject -congresses, keyword IEEE xplore keyword
     Failure/Error: resp.should have_at_most(8800).results
       expected at most 8800 results, got 8809
     # ./spec/advanced_search_spec.rb:113:in `block (4 levels) in <top (required)>'

  2) advanced search pub info subject 'soviet union and historiography' and pub info '1910-1911 pub info 2011
     Failure/Error: resp.should have_at_most(125650).results
       expected at most 125650 results, got 125673
     # ./spec/advanced_search_spec.rb:345:in `block (4 levels) in <top (required)>'

  3) advanced search facets format video, location green, language english before topics selected
     Failure/Error: resp.should have_at_most(35300).results
       expected at most 35300 results, got 35302
     # ./spec/advanced_search_spec.rb:403:in `block (4 levels) in <top (required)>'

  4) Chinese Han variants 敎 654E (variant) => 教 6559 (std trad) behaves like expected result size title search has between 3500 and 3525 results
     Failure/Error: resp.should have_at_most(max).results
       expected at most 3525 results, got 3527
     Shared Example Group: "expected result size" called from ./spec/cjk/chinese_han_variants_spec.rb:128
     # ./spec/support/shared_examples_cjk.rb:8:in `block (2 levels) in <top (required)>'

  5) advanced search pub info subject 'soviet union and historiography' and pub info '1910-1911 pub info 2011
     Failure/Error: resp.should have_at_most(125700).results
       expected at most 125700 results, got 125721
     # ./spec/advanced_search_spec.rb:345:in `block (4 levels) in <top (required)>'

@ndushay