reset hash when changing files

[ci skip]

app/assets/javascripts/repo/components/repo_preview.vue

@@ -15,8 +15,6 @@ export default {
   },
   mounted() {
     this.highlightFile();
-
-    // TODO: get this to work across different files
     this.lineHighlighter = new LineHighlighter({
       fileHolderSelector: '.blob-viewer-container',
       scrollFileHolder: true,

app/assets/javascripts/repo/stores/actions/file.js

@@ -39,6 +39,9 @@ export const setFileActive = ({ commit, state, getters, dispatch }, file) => {
 
   commit(types.SET_FILE_ACTIVE, { file, active: true });
   dispatch('scrollToTab');
+
+  // reset hash for line highlighting
+  location.hash = '';
 };
 
 export const getFileData = ({ state, commit, dispatch }, file) => {