Add export options to subcorpora

app/static/js/CorpusAnalysis/CQiClient.js

@@ -401,6 +401,25 @@ class CQiSubcorpus {
     });
   }
 
+  partial_export(matchIdList, context=50) {
+    return new Promise((resolve, reject) => {
+      const args = {
+        corpus_name: this.corpus.name,
+        subcorpus_name: this.name,
+        match_id_list: matchIdList,
+        context: context
+      };
+
+      this.socket.emit('cqi.corpora.corpus.subcorpora.subcorpus.partial_export', args, response => {
+        if (response.code === 200) {
+          resolve(response.payload);
+        } else {
+          reject(response);
+        }
+      });
+    });
+  }
+
   fdst_1(cutoff, field, attribute) {
     return new Promise((resolve, reject) => {
       const args = {