Fixing issue where user not redirected to page they wanted to access after logging in.
Urgent fix to prevent error with latest laravel

Currently throws ErrorException
Declaration of Frozennode\Administrator\Validator::setRules() should be compatible with Illuminate\Validation\Validator::setRules(array $rules)
adding a contributing.md
Merge branch 'patch-1' of https://github.com/neilcrookes/Laravel-Administrator into dev
Merge branch 'patch-2' of https://github.com/neilcrookes/Laravel-Administrator into dev
updating changelog and version bumping
Merge pull request #362 from FrozenNode/dev

Merge 4.7.2 into master