Implement relaxed, fallback parsing strategy

[n1k0]

As discussed lately, we need to investigate a way to ensure parse() always returns "something". This could be processing page contents a little like how node-unfluff does, as a last-resort fallback strategy.

[n1k0]

While reading the code flow today, I've noticed that relaxing the number of chars considered not enough for generated page contents to be acceptable[0] helps avoiding having null returned as a result.

[0]

readability/Readability.js

Line 863 in 0ff82de

if (this._getInnerText(articleContent, true).length < 500) {

[gijsk]

#423 eventually ended up implementing this. Took a while, but much better now! \o/