fix(style): updated code to follow new eslint recommendations

Squashed commit of the following:

commit f9ce878b26
Author: Julian Lam <julian@nodebb.org>
Date:   Tue Aug 13 14:30:46 2019 -0400

    fix(style): updated code to follow new eslint recommendations

commit 80dd370e41
Author: Julian Lam <julian@nodebb.org>
Date:   Tue Aug 13 14:14:58 2019 -0400

    fix(deps): update dependency sitemap to v4

    Squashed commit of the following:

    commit f4dd9cabb2
    Author: Julian Lam <julian@nodebb.org>
    Date:   Tue Aug 13 11:33:05 2019 -0400

        fix: resolved breaking changes from sitemap v4 upgrade

    commit 9043415ee1
    Merge: e3352b272 72590b346
    Author: Julian Lam <julian@nodebb.org>
    Date:   Tue Aug 13 11:09:55 2019 -0400

        Merge branch 'master' into renovate/sitemap-4.x

    commit e3352b272e
    Author: Renovate Bot <bot@renovateapp.com>
    Date:   Mon Aug 12 07:59:05 2019 +0000

        fix(deps): update dependency sitemap to v4

commit 8e3c0cdcae
Author: Renovate Bot <bot@renovateapp.com>
Date:   Fri Aug 9 00:49:51 2019 +0000

    fix(deps): update dependency commander to v3

commit 2104449d38
Author: Renovate Bot <bot@renovateapp.com>
Date:   Tue Aug 13 15:00:27 2019 +0000

    fix(deps): update dependency mongodb to v3.3.0

commit d2937f446a
Author: Barış Soner Uşaklı <barisusakli@gmail.com>
Date:   Tue Aug 13 10:36:48 2019 -0400

    feat: async/await admin/controllers

commit 1b97e8b199
Author: Misty (Bot) <deploy@nodebb.org>
Date:   Tue Aug 13 09:28:39 2019 +0000

    Latest translations and fallbacks

commit 69a48957a2
Author: Barış Soner Uşaklı <barisusakli@gmail.com>
Date:   Mon Aug 12 21:56:09 2019 -0400

    feat: async/await

commit b9b2a7e593
Author: Barış Soner Uşaklı <barisusakli@gmail.com>
Date:   Mon Aug 12 20:58:29 2019 -0400

    feat: async/await refactor

    controllers/accounts

commit a8d43a1759
Author: Baris Usakli <barisusakli@gmail.com>
Date:   Mon Aug 12 14:49:40 2019 -0400

    feat: async/await controllers/accounts

commit 2f25aae57b
Author: Barış Soner Uşaklı <barisusakli@gmail.com>
Date:   Sun Aug 11 23:09:50 2019 -0400

    fix: #7831, fix pagination

    convert to async/await

commit c9e83f2374
Author: Barış Soner Uşaklı <barisusakli@gmail.com>
Date:   Sun Aug 11 00:14:35 2019 -0400

    fix: remove empty line

commit 30be91b26c
Author: Barış Soner Uşaklı <barisusakli@gmail.com>
Date:   Sun Aug 11 00:13:41 2019 -0400

    fix: remove useless catchs and empty line

commit 2e4a71c0b6
Author: Renovate Bot <bot@renovateapp.com>
Date:   Sat Aug 10 06:51:50 2019 +0000

    chore(deps): update dependency eslint-config-airbnb-base to v14

src/controllers/authentication.js

@@ -202,7 +202,7 @@ authenticationController.registerComplete = function (req, res, next) {
 				delete payload.uid;
 				delete payload.returnTo;
 
-				Object.keys(payload).forEach((prop) => {
+				Object.keys(payload).forEach(prop => {
 					if (typeof payload[prop] === 'boolean') {
 						payload[prop] = payload[prop] ? 1 : 0;
 					}