More improvements to SQL Lab (#1104)

* Handling timeouts

* Fixing timer on non-utc server

* Allowing async with results

* [bugfix] database is not selected

* Making sure the session is up and running

* Cleaning up query results and query objects

* Picking a groupby and metric field on visualize flow

* Showing local time in query history

* Using pull-left pull-right instead of grid layout for table metdata

Long column name were looking weird and icons were wrapping oddly

* Linting

* Eliminating east buttons under the sql editor

* Sort database dropdown by name

* Linting

* Allowing non-SELECT statements to run

* Adding a db config

* Making sqla checkout check cross-db

caravel/assets/javascripts/SqlLab/components/SqlEditorLeft.jsx

@@ -77,7 +77,12 @@ class SqlEditorTopToolbar extends React.Component {
   }
   fetchDatabaseOptions() {
     this.setState({ databaseLoading: true });
-    const url = '/databaseasync/api/read?_flt_0_expose_in_sqllab=1';
+    const url = (
+      '/databaseasync/api/read?' +
+      '_flt_0_expose_in_sqllab=1&' +
+      '_oc_DatabaseAsync=database_name&' +
+      '_od_DatabaseAsync=asc'
+    );
     $.get(url, (data) => {
       const options = data.result.map((db) => ({ value: db.id, label: db.database_name }));
       this.props.actions.setDatabases(data.result);