Some simple visual fixes for YX

Summary:
- new map  and map-legend styling
- new logos
- roundness fixes for couple panels

Test Plan:
Open the app, check new logos and map.
{F12526}{F12525}

old version for comparison
{F12527}

Reviewers: andrew, ram

Reviewed By: ram

Subscribers: sid, karthik, ui

Differential Revision: https://phabricator.dev.yugabyte.com/D7061

managed/ui/src/app/stylesheets/forms.scss

@@ -29,15 +29,15 @@
     text-align: center;
 
     .logo {
-      height: 40px;
+      height: 56px;
       margin: 0 auto 50px auto;
-      margin-bottom: 20px !important;
+      margin-bottom: 35px !important;
       display: block;
     }
     span {
-      color: #fff;
+      color: rgba($YB_SIDEBAR_TEXT, 0.5);
       display: inline-block;
-      margin: 0 0 25px 0;
+      margin: 0 0 10px 0;
     }
   }
 }

managed/ui/src/app/stylesheets/layout.scss

@@ -20,7 +20,7 @@
 }
 
 .container-body {
-  padding: 60px 0 25px 90px;
+  padding: 60px 0 45px 90px;
 
   & > *:first-child {
     &:before {
@@ -38,7 +38,7 @@
   }
 
   .dashboard-container {
-    padding: 30px 30px 50px 30px;
+    padding: 30px 30px 30px 30px;
   }
 }