allow for additional whitespace in localisation

```
Feature: formatted feature file
  In order to structure the feature file
  As a feature write
  I want to apply some basic formatting

Scenario: Justify lines 1
# This is already working
  Given a feature file
    And some love for justification
   When I want to justify the sentences
    And use some extra spaces
   Then the parser should be happy with it


Scenario: Justify lines 2
# And this will be with this patch
  Given a feature file
  And   some love for justification
  When  I want to justify the sentences
  And   use some extra spaces
  Then  the parser should be happy with it