refactor(src/*): change _this to self wherever possible
refactor(localforage): move comment to proper declaration
OCD use four spaces in jshintrc
Merge branch 'renameThisToSelf' of https://github.com/thgreasi/localForage into thgreasi-renameThisToSelf
Enforce self rule in #261 and #266
Fix runner to work in IE8
Remove unneeded 'text/css' type of stylesheets
Fix detection of localStorage in IE8