Updated contributing and credits info.

Now gives prominence to GitHub forks as a contribution method.
Updated README.
Moved some #includes.
Updated language support instructions.
Changed misleading variable name.
Removed some unnecessary #includes.
Fixed typos.
Fixed libloadorder errors missing details.
Removed unnecessary log message.
Dated 0.5.0 release.
Fix typo: "wawrnings" -> "warnings"

Reported by pStyl3:
https://forums.bethsoft.com/topic/1496381-/page-3#entry23560263
Support for Visual Studio 2012
Merge pull request #149 from niveuseverto/vs2012_support

Support for Visual Studio 2012
Update BUILD.MSVC.md

Little help for newcomers with CMake to clarify CMake keys and zlib
Merge pull request #150 from niveuseverto/vs2012_support

Update BUILD.MSVC.md
Moved report resources into subfolder.
Added static report template.

The template currently has example content. It was created using a
generated report HTML file, but has some element IDs added.
Started to implement data loading.

data.js is an example file that will be removed once the Javascript side
of things has been completed and the file is generated by LOOT.
Finished implementing data loading.