Framework: update localforage to 1.4.0 & Fix Mobile Chrome on iOS

[timmyc]

This branch updates localforage to version 1.4.0 which includes a fix for an infinite loop bug in localforage that makes calypso crash on both Chrome for iOS and Firefox for iOS ( fixes #4010 ).

It appears that calypso on Chrome for iOS ( and Firefox on iOS - though I did not test ) have both been broken since localforage was first merged in as part of #2754 on February 3rd ( /cc @gwwar ).

To confirm that localforage was at fault, I checked out the last sha prior to localforage being added to our package.json:

git checkout b2b578aa5df7981207ce8d8ae197f1605b2d1566 #

And under this branch locally, calypso would load in Chrome for iOS.

Then when I checked out the next merge sha for package.json where localforage was added - the infinite loop / freeze was experienced:

git checkout 69a7535499e9082df1e20113b9ec0c2c4c2883d3 #

To Test

• Checkout this branch with the updated version of localforage
• Setup your iOS device to use charles proxy so you can load your local calypso
• Confirm that calypso loads on Chrome iOS, and you can navigate to different sections

hat tip to @jblz for reporting the issue ( and hopefully you can test the fix )

[jblz]

Confirmed fixed for me -- verified using Charles proxy.
Thanks very much for the fix!

[gwwar]

Verified that normal localForage usage works. Thanks for the 🔍 and fix!