New plugin 'pytohn_pep8_indent'.
Typo fixed repo address of 'pathogen'.
Improved mapping ,ck of 'syntastic', save then check.
Changed 'ycm' settings.

* no lazy loading, it will cause ycm to fail.
* no ycm completion in string and comment.
Assigned <A-R> to run python3 %.
Added rules to lazy loading 'indent_line'.
New config 'python_mode' and 'sub_cfg_python_suite'.