update student work view

- add the job title to the headers
- change the back button title to "Open Jobs" instead of "SIS"

Author: hawkrives

source/views/sis/student-work/detail.ios.js

@@ -128,3 +128,9 @@ export default function JobDetailView(props: {
     </ScrollView>
   )
 }
+JobDetailView.navigationOptions = ({navigation}) => {
+  const {job} = navigation.state.params
+  return {
+    title: job.title,
+  }
+}

source/views/sis/student-work/index.js

@@ -41,6 +41,7 @@ const styles = StyleSheet.create({
 
 export default class StudentWorkView extends React.Component {
   static navigationOptions = {
+    headerBackTitle: 'Open Jobs',
     tabBarLabel: 'Open Jobs',
     tabBarIcon: TabBarIcon('briefcase'),
   }