Changed description.
Added images.
Added scripts.
Added templates.
Added styles.
Updated language data and section file.
Fixed gallery script URL.
Merge branch 'master' into site.

Conflicts:
	README.md
Added platform images.
Defined `download` section.
Added download template file.
Added download related template parts.
Created custom downloads module.
Added downloads module to system initialization file.
Removed unused code.
Header style: Switch to transform from position relative.
Content style: Add download sections.
Home template: Call show_version instead of manually creating tag.
Language file: Added missing language constants.