Fixes sidemenu's height and name panel's padding and margin

There are some layout issues in desinger page . So, I have fixed some of them.
1) Padding of name-panel
2) Margin of name-panel
3) Sidemenu height

Signed-off-by: Agha Saad Fraz <agha.saad04@gmail.com>

themes/pmahomme/scss/_common.scss

@@ -22,10 +22,6 @@ body {
   background: $main-background;
 }
 
-#page_content {
-  margin: 0 0.5em;
-}
-
 .desktop50 {
   width: 50%;
 }

themes/pmahomme/scss/_designer.scss

@@ -485,6 +485,7 @@ a {
     display: block;
     float: none;
     overflow: hidden;
+    line-height: 1em;
   }
 
   img,
@@ -499,7 +500,7 @@ a {
   background: #efefef;
   width: 100%;
   font-size: 1.2em;
-  padding: 10px;
+  padding: 5px;
   font-weight: bold;
 }