REMOVE gtest from list of needed packages to install with yum (empirically checked)
ADD libxslt package as requirement for end-to-end tests in README.md procudures
renamed all unit test XML files in testData/ according to new nomenclature
Merge branch 'develop' into hardending/rename_xml_test_files
renamed all unit test XML files in manual/ according to new nomenclature
Merge pull request #73 from telefonicaid/hardending/rename_xml_test_files

Hardending/rename xml test files
Merge pull request #74 from telefonicaid/hardending/rename_xml_test_files_02

new names for xml files
ADD new library installation in the install_libs makefile target
Merge pull request #75 from telefonicaid/hardening/install_libs_makefile_target

ADD new library installation in the install_libs makefile target
FIX Metadata doesn't need a vector name to render
Merge branch 'develop' into bug/json_entity_rendering
Merge branch 'bug/json_entity_rendering' of github.com:telefonicaid/fiware-orion into bug/json_entity_rendering