Client: minor styles changes

mpwo_client/src/components/App.css

@@ -41,6 +41,10 @@
   to { transform: rotate(360deg); }
 }
 
+a {
+  color: #40578a;
+}
+
 .card {
   text-align: left;
 }

mpwo_client/src/components/Dashboard/ActivityCard.jsx

@@ -1,3 +1,4 @@
+import { format } from 'date-fns'
 import React from 'react'
 import { Link } from 'react-router-dom'
 
@@ -12,7 +13,7 @@ export default function ActivityCard (props) {
         <Link to={`/activities/${activity.id}`}>
         {sports.filter(sport => sport.id === activity.sport_id)
                .map(sport => sport.label)} -{' '}
-        {activity.activity_date}
+        {format(activity.activity_date, 'DD/MM/YYYY HH:mm')}
         </Link>
       </div>
       <div className="card-body">

mpwo_client/src/components/Dashboard/Statistics.jsx

@@ -85,7 +85,6 @@ class Statistics extends React.Component {
                   <XAxis
                     dataKey="date"
                     interval={0} // to force to display all ticks
-                    label={{ value: 'date', offset: 0, position: 'bottom' }}
                   />
                   <YAxis
                     tickFormatter={value => displayedData === 'distance'