Remove check_path_exists function
Add utils.check_extension tester
Fix unicode in emptytree and add tester
Update utils.mkdir_p tester
Update long_description

Use README.rst if exists
Add release script
Add develop requirements for test
configs: move exception in cli
Improve configs tester
generators: move exception in cli
Sort index structure in lower-case, alphabetical order
Template support multiple level catalog in Index

Use Jinja2's macro
Fix error on nav in wiki page
Merge branch 'dev'