Client - update app style + add link in nav-bar

fittrackee_client/src/scss/base.scss

@@ -23,17 +23,8 @@ a {
   text-decoration: none;
 }
 
-.container {
-  display: flex;
-  margin-left: auto;
-  margin-right: auto;
-  padding-left: 15px;
-  padding-right: 15px;
-  max-width: $container-width;
-  width: 100%;
-}
-
 button {
+  background: var(--app-background-color);
   border: solid 1px var(--app-color);
   border-radius: 0;
   box-shadow: 2px 2px 2px var(--app-shadow-color);

fittrackee_client/src/scss/colors.scss

@@ -1,12 +1,14 @@
 :root {
-  --app-background-color: #eaeaea;
+  --app-background-color: #FFFFFF;
   --app-color: #2c3e50;
   --app-a-color: #40578a;
 
   --nav-bar-background-color: #FFFFFF;
   --nav-bar-link-active: #485b6e;
+  --nav-border-color: #c5ccdb;
 
   --footer-background-color: #FFFFFF;
+  --footer-border-color: #ebeef3;
   --footer-color: #8b8c8c;
 
   --app-shadow-color: lightgrey;