`pylint-flymake-mode', lp:1180654, fixed

`pyflakespep8' fixed
minor cleanup for speed

normalize prefixes

`python-ffap-setup-code' renamend `py-ffap-setup-code'
`python-ffap-string-code' renamend `py-ffap-string-code'
Open a `py-shell' also from upcased M-x Python, IPython etc., lp:1186505, fixed