Move sheet and user-picker styles to app.scss

This is in preparation for adding these things to the site pages.

h/css/app.scss

@@ -82,12 +82,67 @@ ol {
   }
 }
 
+
+.sheet {
+  @include smallshadow;
+  font-family: $sansFontFamily;
+  max-height: 480px;
+  overflow: hidden;
+  position: absolute;
+  left: 0;
+  right: 0;
+  top: 0;
+
+  .close {
+    position: absolute;
+    font-size: 14px;
+    right: 7px;
+    top: 7px;
+  }
+
+  &.collapsed {
+    max-height: 0;
+  }
+
+  footer {
+    font-size: .8em;
+    font-family: $sansFontFamily;
+    text-align: right;
+  }
+
+  input:not([type="submit"]) { width: 100%; }
+}
+
+
 .user {
-    font-weight: bold;
-    font-size: 1.1em;
+  font-weight: bold;
+  font-size: 1.1em;
+  &:hover {
+    color: $linkColorHover;
+    cursor: pointer;
+    text-decoration: underline;
+  }
+}
+
+
+.user-picker {
+  .avatar {
+    border-radius: 2px;
+  }
+
+  .dropdown-toggle {
+    .provider {
+      color: $grayLight;
+      display: none;
+    }
     &:hover {
-      color: $linkColorHover;
-      cursor: pointer;
-      text-decoration: underline;
+      .provider {
+        display: inline;
+      }
     }
   }
+
+  .dropdown.open .provider {
+    display: inline;
+  }
+}

h/css/sidebar.scss

@@ -40,62 +40,6 @@ svg { -webkit-tap-highlight-color: rgba(255, 255, 255, 0); }
 }
 
 
-//SHEET////////////////////////////////
-//This comes down from under the toolbar
-.sheet {
-  @include smallshadow;
-  font-family: $sansFontFamily;
-  max-height: 480px;
-  overflow: hidden;
-  position: absolute;
-  left: 0;
-  right: 0;
-  top: 0;
-
-  .close {
-    position: absolute;
-    font-size: 14px;
-    right: 7px;
-    top: 7px;
-  }
-
-  &.collapsed {
-    max-height: 0;
-  }
-
-  footer {
-    font-size: .8em;
-    font-family: $sansFontFamily;
-    text-align: right;
-  }
-
-  input:not([type="submit"]) { width: 100%; }
-}
-
-
-.user-picker {
-  .avatar {
-    border-radius: 2px;
-  }
-
-  .dropdown-toggle {
-    .provider {
-      color: $grayLight;
-      display: none;
-    }
-    &:hover {
-      .provider {
-        display: inline;
-      }
-    }
-  }
-
-  .dropdown.open .provider {
-    display: inline;
-  }
-}
-
-
 //SEARCH HIGHLIGHTS////////////////////////////////
 .search-hl-active {
   background: $highlightColor;