Emacs:yas:Move yas init before python init

Move yasnippet init to init.el as this meddling with yas snippet
expansion.

Signed-off-by: Ratheesh S <ratheeshreddy@gmail.com>
Tested-by: Ratheesh S <ratheeshreddy@gmail.com>
Emacs:python: configure flymake for python

Signed-off-by: Ratheesh S <ratheeshreddy@gmail.com>
Tested-by: Ratheesh S <ratheeshreddy@gmail.com>
Emacs: Fix elpy-clean-modeline error

New elpy(> v1.5) has removed elpy-clean-modeline and calling this api
throws error. This patch fix this issue.

Signed-off-by: Ratheesh S <ratheeshreddy@gmail.com>
Tested-by: Ratheesh S <ratheeshreddy@gmail.com>