Update default refs to accent

stylesheets/_session.scss

@@ -192,7 +192,7 @@ textarea {
     line-height: 40px;
     padding: 0px $session-margin-lg;
     font-size: $session-font-md;
-    font-family: $session-font-default;
+    font-family: $session-font-accent;
     border-radius: 500px;
 
     &:not(.disabled):hover {
@@ -749,7 +749,7 @@ label {
   background-color: $session-shade-4;
 
   color: $session-color-white;
-  font-family: $session-font-default;
+  font-family: $session-font-accent;
   font-size: $session-font-sm;
   line-height: $session-icon-size-sm;
   font-weight: 700;

stylesheets/_session_left_pane.scss

@@ -112,7 +112,7 @@ $session-compose-margin: 20px;
   &__user__profile {
     &-number,
     &-name {
-      @include fontDefaultBold();
+      @include fontAccentBold();
       font-size: 15px;
 
       @at-root .light-theme #{&} {
@@ -193,7 +193,7 @@ $session-compose-margin: 20px;
 
     .session-button {
       margin-left: auto;
-      @include fontDefaultBold();
+      @include fontAccentBold();
     }
 
     &-buttons {

stylesheets/_session_signin.scss

@@ -17,7 +17,7 @@
 
       &-text {
         color: $session-color-white;
-        font-family: $session-font-default;
+        font-family: $session-font-accent;
 
         .title {
           font-size: 100px;
@@ -87,7 +87,7 @@
     }
 
     &__tab {
-      @include fontDefaultBold();
+      @include fontAccentBold();
       width: 100%;
       padding-bottom: 10px;
       background-color: transparent;

stylesheets/_session_theme.scss

@@ -103,7 +103,7 @@
 }
 
 @mixin session-h-title {
-  @include fontDefaultBold();
+  @include fontAccentBold();
 }
 
 h1 {