Revert "chore(tslint): update tslint version"
Revert "chore(tslint): update tslint version"

This reverts commit b6c9286c7e141e702c1703fb3e17651efad3d3cb.

driftyco/ionic-app-scripts,rolandjitsu/ionic-app-scripts,michaelgeorgeattard/ionic-app-scripts,michaelgeorgeattard/ionic-app-scripts,rolandjitsu/ionic-app-scripts,driftyco/ionic-app-scripts,driftyco/ionic-app-scripts,rolandjitsu/ionic-app-scripts,michaelgeorgeattard/ionic-app-scripts