Merge pull request #747 from echel0n/dev

Dev
Merge pull request #759 from echel0n/dev

Dev
Switch from urlencode to json

Per the Pushbullet API (https://docs.pushbullet.com/http/) the POST should use a JSON body, with content-type 'application/json'
Merge branch 'master' of https://github.com/jmelen/SickRage into dev