[CLEANUP] Move js to main folder.
[CLEANUP] Move gallery includes to main includes folder.
[CLEANUP] Remove unused vars.
[CLEANUP] Reorganize gallery file.
[CLEANUP] Output formatting.
[CLEANUP] Reorganize gallery file.
[CLEANUP] Spacing.
[CLEANUP] Use lazysizes for all lazy-loading.
[CLEANUP] Spacing.
Merge pull request #168 from joelhawksley/jh/cleanups

Jh/cleanups