add api for get all tag

src/server/routes/index.js

@@ -15,6 +15,7 @@ module.exports = function(crowi, app) {
     , installer = require('./installer')(crowi, app)
     , user      = require('./user')(crowi, app)
     , attachment= require('./attachment')(crowi, app)
+    , tag       = require('./tag')(crowi, app)
     , comment   = require('./comment')(crowi, app)
     , bookmark  = require('./bookmark')(crowi, app)
     , revision  = require('./revision')(crowi, app)
@@ -202,6 +203,7 @@ module.exports = function(crowi, app) {
   app.post('/_api/pages.revertRemove' , loginRequired(crowi, app) , csrf, page.api.revertRemove); // (Avoid from API Token)
   app.post('/_api/pages.unlink'       , loginRequired(crowi, app) , csrf, page.api.unlink); // (Avoid from API Token)
   app.post('/_api/pages.duplicate'    , accessTokenParser, loginRequired(crowi, app), csrf, page.api.duplicate);
+  app.get('/_api/tags.search'         , accessTokenParser, loginRequired(crowi, app, false), tag.api.search);
   app.get('/_api/comments.get'        , accessTokenParser , loginRequired(crowi, app, false) , comment.api.get);
   app.post('/_api/comments.add'       , form.comment, accessTokenParser , loginRequired(crowi, app) , csrf, comment.api.add);
   app.post('/_api/comments.remove'    , accessTokenParser , loginRequired(crowi, app) , csrf, comment.api.remove);