Fix for unterminated entity reference
Fix for unterminated entity reference

Solution for issue https://github.com/kbsali/php-redmine-api/issues/54 was incorrectly implemented. It throw "unterminated entity reference" for "&" character.
airmoi/php-redmine-api,ferdynator/php-redmine-api,ArchangelDesign/RedmineAdmin,Kijubei/php-redmine-api,kbsali/php-redmine-api,happy-code-com/php-redmine-api,abordin/php-redmine-api,arlin2050/php-redmine-api,leominov/php-redmine-api