Minor bug fixes (#6019)

* PLT-6193 - Post right scroll for small threads

* PLT-6210 - Emoji icon not aligned.

* Fixing word break

webapp/sass/layout/_markdown.scss

@@ -1,5 +1,9 @@
 @charset 'UTF-8';
 
+.markdown__link {
+    word-break: break-all;
+}
+
 .markdown__heading {
     font-weight: 700;
     line-height: 1.5;

webapp/sass/layout/_post-right.scss

@@ -148,9 +148,8 @@
     -webkit-overflow-scrolling: touch;
     @include flex(1 1 auto);
     overflow: auto;
-    position: relative;
     padding-top: 10px;
-    min-height: 700px;
+    position: relative;
 
     .file-preview__container {
         margin-top: 5px;

webapp/sass/layout/_post.scss

@@ -857,6 +857,7 @@
         // If the last paragraph of an edited post is a paragraph, make it inline-block so that the (edited) indicator can be on the same line as it
         .post-message__text > p:last-child {
             display: inline-block;
+            width: auto;
         }
 
         .post-edited-indicator {
@@ -1122,6 +1123,7 @@
 
         &:after {
             content: '[...]';
+            font-family: 'Open Sans', sans-serif;
             position: relative;
             top: -1px;
         }