GH-1 In order to refresh project changed tomcat version libraries to newest versions
GH-1 In order to clean up project removed modules dedicated for archived tomcat versions
GH-1 In order to keep dependencies in version needed by supported tomcat versions upgraded servlet-api and jst version and removed unneccessary (required for tomcat < 6) standard taglib library
GH-1 In order to clean up project removed unnecessary servlet-api dependencies
GH-1 In order to clean up project upgraded java version to lowest supported version (1.7)
GH-1 In order to solve dependencies problems introduced in previous commits decrement used tomcat 7 version and fixed servlet-api dependencies