Consolidate server-side props

Use screens/ClassifyPage/getServerSideProps to generate props for all pages under /classify.

packages/app-project/pages/projects/[owner]/[project]/classify/workflow/[workflowID]/subject-set/[subjectSetID]/subject/[subjectID]/index.js

@@ -1,7 +1 @@
-export { default } from '@screens/ClassifyPage'
-
-export function getServerSideProps({ params, req, res }) {
-  const { subjectID, subjectSetID, workflowID } = params
-  const props = { subjectID, subjectSetID, workflowID }
-  return ({ props })
-}
+export { default, getServerSideProps } from '@screens/ClassifyPage'

packages/app-project/pages/projects/[owner]/[project]/classify/workflow/[workflowID]/subject/[subjectID]/index.js

@@ -1,7 +1 @@
-export { default } from '@screens/ClassifyPage'
-
-export function getServerSideProps({ params, req, res }) {
-  const { subjectID, workflowID } = params
-  const props = { subjectID, workflowID }
-  return ({ props })
-}
+export { default, getServerSideProps } from '@screens/ClassifyPage'

packages/app-project/src/screens/ClassifyPage/getServerSideProps.js

@@ -1,9 +1,12 @@
 import getDefaultPageProps from '@helpers/getDefaultPageProps'
 
 export async function getServerSideProps({ params, query, req, res }) {
-  const { subjectSetID, workflowID } = params
+  const { subjectID, subjectSetID, workflowID } = params
   const { props } = await getDefaultPageProps({ params, query, req, res })
   const { project } = props.initialState
+  if (subjectID) {
+    props.subjectID = subjectID
+  }
   if (subjectSetID) {
     props.subjectSetID = subjectSetID
   }