Bugfix: Mix of tab and space all converted to 4spaces

This was causing problems for me, and i switched the whole file to 4spaces as per pep8 guidelines
Enhancement: Make code pep8 compliant

This is for readability
Fix: Exit cleanly in case landspitali.is does not have the expected structure
Merge branch 'bugfix-mixed-tabs-and-spaces' of https://github.com/palli/twitter-bots into palli-bugfix-mixed-tabs-and-spaces

Conflicts:
	landspitali.py
Resolved.