Leading space in to_string(index=False), #11833
closes #11833 

I had to create a new PR , due to unresolved conflicts
Just look at the third commit , it is all squashed , ignore the rest

I don't get it why the travis build is not being executed for the third commit, it fails for its parent(the first commit) , but would  pass for itself , as it is an updated version of its parent and the bug in the parent in tackled

I even checked for the merge-ability of the third commit , it merges with the branch. Still the travis build is not being executed

@jreback 

this still needs to be squashed. pls don't open another PR. you can simply do it in the _same_ PR. The instructions are [here](http://pandas.pydata.org/pandas-docs/stable/contributing.html#contributing-your-changes-to-pandas). Pls ask if you are having trouble.
 merged via https://github.com/pydata/pandas/commit/bc0a166bdb30b828e1dac3aa1db57ea8fa50e644

thanks!
