Set LC_CTYPE="C" when calling (unix) sort

For some non-ASCII characters we get an error from /usr/bin/sort stating that we have an “illegal byte sequence”. Since the system lack proper collation info for non-ASCII characters, forcing "C" as the character type/locale is only a loss for people who have installed a replacement sort command (or collation info).

Closes #12
Include “Randomize Lines” in the sort menu (bound to F5)
Disable indent corrections for specializations of text.html

Previously we disabled it for “text” except “text.html”, which would mean it was also enabled e.g. for “text.html.markdown” (undesired). We now only make “text.html.basic” the exception.
Remove exclusion for text.html.basic

Previously we excluded `text.html` from this setting but this is no longer necessary as it has it's own value now.
Point to ruby 1.8 shim

Using a shim allows us to catch when 1.8 of ruby is not present and provide other options.

#ignore