Add in Zixaphirs infinite scrolling
Make a few changes specific to the fixed header
Close #239
Merge zixaphirs typo fix
Close #237
Start work on infinite scrolling
Infinite scrolling index mode
Close #236
Release 4chan X v1.3.1.
Merge branch 'master' of https://github.com/seaweedchan/4chan-x into v3

Conflicts:
	LICENSE
	builds/4chan-X.user.js
	builds/crx/script.js
	src/Archive/Redirect.coffee
	src/General/Index.coffee