Bug fixes (#6439)

* PLT-5863 - Fixing overflow in modals

* PLT-6545 - Fix for Code block tag on mobile

* PLT-6549 - Fixing integrations UI

* PLT-6506 - Large embedded images producting scroll

webapp/sass/responsive/_desktop.scss

@@ -97,6 +97,10 @@
             }
         }
     }
+
+    .integration-option {
+        width: 280px;
+    }
 }
 
 @media (min-width: 992px) {

webapp/sass/responsive/_mobile.scss

@@ -1,6 +1,12 @@
 @charset 'UTF-8';
 
 @media screen and (max-width: 768px) {
+    #post-list {
+        .markdown-inline-img {
+            max-width: 100%;
+        }
+    }
+
     .member-role .member-menu,
     .member-drop .member-menu {
         right: 0;
@@ -181,6 +187,7 @@
         @include opacity(.6);
         @include transition(none);
         display: block;
+        position: relative;
     }
 
     .post-code {