Fix deprecated moment date parsing

[ghost]

The current use of moment constructor uses a deprecated form in some cases.

Sample error:

Deprecation warning: value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are discouraged and will be removed in an upcoming major release. Please refer to http://momentjs.com/guides/#/warnings/js-date/ for more info.
Arguments: 
[0] _isAMomentObject: true, _isUTC: false, _useUTC: false, _l: undefined, _i: 04-08-2018, _f: undefined, _strict: undefined, _locale: [object Object]
Error
at Function.createFromInputFallback (/app/node_modules/moment/moment.js:320:94)
at configFromString (/app/node_modules/moment/moment.js:2368:11)
at configFromInput (/app/node_modules/moment/moment.js:2594:9)
at prepareConfig (/app/node_modules/moment/moment.js:2577:9)
at createFromConfig (/app/node_modules/moment/moment.js:2544:40)
at createLocalOrUTC (/app/node_modules/moment/moment.js:2631:12)
at createLocal (/app/node_modules/moment/moment.js:2635:12)
at hooks (/app/node_modules/moment/moment.js:12:25)
at /app/server.js:353:26
at /app/lib.js:1453:9
at handleCallback (/app/node_modules/mongodb/lib/utils.js:96:12)
at /app/node_modules/mongodb/lib/cursor.js:833:16
at handleCallback (/app/node_modules/mongodb-core/lib/cursor.js:244:5)
at setCursorDeadAndNotified (/app/node_modules/mongodb-core/lib/cursor.js:548:3)
at nextFunction (/app/node_modules/mongodb-core/lib/cursor.js:722:7)
at Cursor.next [as _next] (/app/node_modules/mongodb-core/lib/cursor.js:753:3)