Revert "Create .gitattributes to set line endings behavior"

This reverts commit 4823f84f3668b3bd6031c176e16b1ab09cf456b0.

This change was incorrect and inappropriate because:

1. Not all files in the RES git repository are text files.
   Relying on git autodetection is unreliable.
2. Git CR/LF conversion is known to cause certain problems
   during development.
3. This intrusive setting imposes the conversion on all
   contributors to the RES repository, which is inappropriate
   for an open-source project.
4. The same setting can be enabled locally by changing the
   local git repository's configuration. As such, including
   the settings as a versioned file in the repository is
   unnecessary.
Opera 12: Initialize RES immediately

The DOMContentLoaded event has already been fired at the point where
RES is loaded.

Fixes RES never initializing on Opera 12.
Opera 12: Add HTTPS Imgur URI to allowed origins

Fixes Imgur album expandos on Opera 12.
Opera 12: Fix MediaCrush expandos