Change install failure prompt to use apostophes

This commit removes quotation marks from the automatically generated config.php
code and replaces them with apostrophes. This lessens the amount of parsing
required (but is apparently a negligible performance hit as of PHP 4.3).

c. 2 mins.
Merge `prototype.php` with main branch
Move code in line with style-guide
Give `render()` a default to second parameter

As the second parameter of `render()` is optional (as not all templates need
data), this commit adds a default value to the second parameter of
`render()`, suppressing the warning PHP previously emmitted due to missing
arguments.

Time: 5 min
Merge pull request #18 from zuzak/master

Styling; fixes