Proposed subtle refactoring.

[Maikuolan]

• Renames "acess_key" to "access_key" (makes more sense and looks better due to spellling).
• Removes some excess trailing whitespace.
• Adjusts some indenting and spacing.
• Improves header readability.
• Converts tabs to spaces.
• Adds terminating newline to some files where it was missing.
• Self-terminates metatags (some weren't correctly self-terminated).
• Removed empty CSS class "td".
• Missing HTML tag.
• Subtle logic improvement for rename functionality.