Merge branch 'master' of https://github.com/tootsuite/mastodon

# Conflicts:
#	app/controllers/settings/exports_controller.rb
#	app/models/media_attachment.rb
#	app/models/status.rb
#	app/views/about/show.html.haml
#	docker_entrypoint.sh
#	spec/views/about/show.html.haml_spec.rb

app/javascript/styles/mastodon/components.scss

@@ -40,14 +40,20 @@
     cursor: default;
   }
 
-  &.button-alternative {
+  &.button-primary,
+  &.button-alternative,
+  &.button-secondary,
+  &.button-alternative-2 {
     font-size: 16px;
     line-height: 36px;
     height: auto;
-    color: $ui-base-color;
-    background: $ui-primary-color;
     text-transform: none;
     padding: 4px 16px;
+  }
+
+  &.button-alternative {
+    color: $ui-base-color;
+    background: $ui-primary-color;
 
     &:active,
     &:focus,
@@ -56,15 +62,20 @@
     }
   }
 
+  &.button-alternative-2 {
+    background: $ui-base-lighter-color;
+
+    &:active,
+    &:focus,
+    &:hover {
+      background-color: lighten($ui-base-lighter-color, 4%);
+    }
+  }
+
   &.button-secondary {
-    font-size: 16px;
-    line-height: 36px;
-    height: auto;
     color: $ui-primary-color;
-    text-transform: none;
     background: transparent;
     padding: 3px 15px;
-    border-radius: 4px;
     border: 1px solid $ui-primary-color;
 
     &:active,
@@ -433,6 +444,34 @@
       min-width: 40%;
       margin: 5px;
 
+      &__actions {
+        background: linear-gradient(180deg, rgba($base-shadow-color, 0.8) 0, rgba($base-shadow-color, 0.35) 80%, transparent);
+        display: flex;
+        align-items: flex-start;
+        justify-content: space-between;
+        opacity: 0;
+        transition: opacity .1s ease;
+
+        .icon-button {
+          flex: 0 1 auto;
+          color: $ui-secondary-color;
+          font-size: 14px;
+          font-weight: 500;
+          padding: 10px;
+          font-family: inherit;
+
+          &:hover,
+          &:focus,
+          &:active {
+            color: lighten($ui-secondary-color, 4%);
+          }
+        }
+
+        &.active {
+          opacity: 1;
+        }
+      }
+
       &-description {
         position: absolute;
         z-index: 2;
@@ -470,10 +509,6 @@
           opacity: 1;
         }
       }
-
-      .icon-button {
-        mix-blend-mode: difference;
-      }
     }
 
     .compose-form__upload-thumbnail {
@@ -481,8 +516,9 @@
       background-position: center;
       background-size: cover;
       background-repeat: no-repeat;
-      height: 100px;
+      height: 140px;
       width: 100%;
+      overflow: hidden;
     }
   }
 
@@ -4133,8 +4169,12 @@ a.status-card {
   &,
   img {
     width: 100%;
-    height: 100%;
+  }
+
+  img {
+    position: relative;
     object-fit: cover;
+    height: auto;
   }
 }
 
@@ -4842,3 +4882,31 @@ noscript {
     margin-bottom: 0;
   }
 }
+
+.focal-point {
+  position: relative;
+  cursor: pointer;
+  overflow: hidden;
+
+  &.dragging {
+    cursor: move;
+  }
+
+  &__reticle {
+    position: absolute;
+    width: 100px;
+    height: 100px;
+    transform: translate(-50%, -50%);
+    background: url('../images/reticle.png') no-repeat 0 0;
+    border-radius: 50%;
+    box-shadow: 0 0 0 9999em rgba($base-shadow-color, 0.35);
+  }
+
+  &__overlay {
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    top: 0;
+    left: 0;
+  }
+}