Fix spaces in babynames lesson

Use for spaces as tabs, not 2
Fix more spaces in babynames
Fix spacing in basic lessons

Convert tabs to 4 spaces, instead of 2
Fix spacing in copyspecial lesson

Use 4 spaces for tabs, not 2
Fix spacing in logpuzzle lesson

Use 4 spaces for tabs, not 2
Fix hello.py spacing

Use 4 spaces for tabs, not 2.
Merge branch 'fix-spaces'