housekeeping: factor out components for easier BaseLayout reuse (#4604)

* improve: wrap schemes to encapsulate rendering logic
* improve: wrap filter to encapsulate rendering logic
* improve: wrap info section to encapsulate rendering logic
* improve: wrap servers plugin to encapsulate rendering logic
* improve: added tests for schemes-wrapper rendering logic
* improve: added tests for info-wrapper rendering logic, also do not render info if info is undefined
* improve: added tests for filter rendering logic
* improve: added tests for servers-wrapper rendering logic
* `InfoWrapper` -> `InfoContainer`
* add `containers` alias to Babel configuration
* `SchemesWrapper` -> `SchemesContainer`
* drop `container` from container file names
* `ServersWrapper` -> `ServersContainer`
* `Filter` -> `FilterContainer`
* follow `core/containers` pattern in BasePreset

src/core/presets/base.js

@@ -51,10 +51,13 @@ import Info, {
   InfoUrl,
   InfoBasePath
 } from "core/components/info"
+import InfoContainer from "core/containers/info"
 import Footer from "core/components/footer"
+import FilterContainer from "core/containers/filter"
 import ParamBody from "core/components/param-body"
 import Curl from "core/components/curl"
 import Schemes from "core/components/schemes"
+import SchemesContainer from "core/containers/schemes"
 import ModelCollapse from "core/components/model-collapse"
 import ModelExample from "core/components/model-example"
 import ModelWrapper from "core/components/model-wrapper"
@@ -95,6 +98,7 @@ export default function() {
       clear: Clear,
       liveResponse: LiveResponse,
       info: Info,
+      InfoContainer,
       onlineValidatorBadge: OnlineValidatorBadge,
       operations: Operations,
       operation: Operation,
@@ -110,9 +114,11 @@ export default function() {
       contentType: ContentType,
       overview: Overview,
       footer: Footer,
+      FilterContainer,
       ParamBody: ParamBody,
       curl: Curl,
       schemes: Schemes,
+      SchemesContainer,
       modelExample: ModelExample,
       ModelWrapper,
       ModelCollapse,