Another large update for all components

reorganization, linting, updating file imports, consolidation
warning: there will be errors in this commit
todo: update webpack, add missing styles, scss files, consolidate group page components.

app/javascript/gabsocial/features/compose/components/warning/warning.scss

@@ -0,0 +1,33 @@
+.compose-form-warning {
+  color: $inverted-text-color;
+  margin-bottom: 10px;
+  background: $ui-primary-color;
+  box-shadow: 0 2px 6px rgba($base-shadow-color, 0.3);
+  padding: 8px 10px;
+  border-radius: 4px;
+
+  @include text-sizing(13px, 400);
+
+  strong {
+    color: $inverted-text-color;
+    font-weight: 500;
+
+    @each $lang in $cjk-langs {
+      &:lang(#{$lang}) {
+        font-weight: 700;
+      }
+    }
+  }
+
+  a {
+    color: $lighter-text-color;
+    font-weight: 500;
+    text-decoration: underline;
+
+    &:hover,
+    &:active,
+    &:focus {
+      text-decoration: none;
+    }
+  }
+}