Amazon Products Feed - Associates Script

Changes since v4.090727
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v4.090805

+ Increased number of pages to 400 in line with the suggestion by Tom.Paine
  <http://www.absolutefreebies.com/phpBB2/viewtopic.php?p=58813#58813>

+ Update to String replacement as suggested by Tom.Paine
  <http://www.absolutefreebies.com/phpBB2/viewtopic.php?p=58815#58815>

+ Changed language texts to remove javascipt details link from default language

+ Reorganised templates, replacing LABBS templates with the original APF defaults

- Removed unused Perl Module URI::Escape from sign_request.pl

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v4.090809

+ Added local Perl library with Digest::SHA::PurePerl

+ Changed code in sign_request.pl to gracefully fallback to using local Perl modules
  when modules are missing from server library, courtesy of Keith S. (ad104@yahoo.com).