Various (minor) style issues

I tried to get a look at the module to implement #247758: Use Transliteration module for transliteration, but there were too many wee issues that made me itch. So I swept over the code and fixed what I could find. This includes

• Excessive white-space (including (but possibly not limited to) trailing white-space, double new-lines, double spaces in strings (and comments))
• Double quoted strings where they might as well have been single quoted
• Arrays not conforming to the Drupal coding standards

Not that some of these were also done one way some places and another way other places (like using double spaces in strings after periods), so this patch should also provide some more consistency within the module's code.