[explore-v2] setup, basic layout, control panels, v2 url (#1233)

* Explore control panel - Chart control, TimeFilter, GroupBy, Filters (#1205)

* create structure for new forked explore view (#1099)

* create structure for new forked explore view

* update component name

* add bootstrap data pattern

* remove console.log

* Associate version to entry files (#1060)

* Associate version to entry files

* Modified path joins for configs

* Made changes based on comments

* Created store and reducers (#1108)

* Created store and reducers

* Added spec

* Modifications based on comments

* Explore control panel components: Chart control, Time filter, SQL,
GroupBy and Filters

* Modifications based on comments

* accommodate old and new explore urls

* move bootstrap data up in scope

* fix code climate issues

* fix long lines

* fix syntax error

caravel/assets/javascripts/explorev2/components/GroupBy.jsx

@@ -0,0 +1,82 @@
+import React from 'react';
+import Select from 'react-select';
+import { bindActionCreators } from 'redux';
+import * as actions from '../actions/exploreActions';
+import { connect } from 'react-redux';
+
+const propTypes = {
+  actions: React.PropTypes.object,
+  metricsOpts: React.PropTypes.array,
+  metrics: React.PropTypes.array,
+  groupByColumnOpts: React.PropTypes.array,
+  groupByColumns: React.PropTypes.array,
+};
+
+const defaultProps = {
+  metricsOpts: [],
+  metrics: [],
+  groupByColumnOpts: [],
+  groupByColumns: [],
+};
+
+class GroupBy extends React.Component {
+  changeColumns(groupByColumnOpts) {
+    this.props.actions.setGroupByColumns(groupByColumnOpts);
+  }
+  changeMetrics(metricsOpts) {
+    this.props.actions.setMetrics(metricsOpts);
+  }
+  render() {
+    return (
+      <div className="panel space-1">
+        <div className="panel-header">GroupBy</div>
+        <div className="panel-body">
+          <div className="row">
+            <h5 className="section-heading">GroupBy Column</h5>
+            <Select
+              multi
+              name="select-time-column"
+              placeholder="Select groupby columns"
+              options={this.props.groupByColumnOpts}
+              value={this.props.groupByColumns}
+              autosize={false}
+              onChange={this.changeColumns.bind(this)}
+            />
+          </div>
+          <div className="row">
+            <h5 className="section-heading">Metrics</h5>
+            <Select
+              multi
+              name="select-since"
+              placeholder="Select metrics"
+              options={this.props.metricsOpts}
+              value={this.props.metrics}
+              autosize={false}
+              onChange={this.changeMetrics.bind(this)}
+            />
+          </div>
+        </div>
+      </div>
+    );
+  }
+}
+
+GroupBy.propTypes = propTypes;
+GroupBy.defaultProps = defaultProps;
+
+function mapStateToProps(state) {
+  return {
+    metricsOpts: state.metricsOpts,
+    metrics: state.metrics,
+    groupByColumnOpts: state.groupByColumnOpts,
+    groupByColumns: state.groupByColumns,
+  };
+}
+
+function mapDispatchToProps(dispatch) {
+  return {
+    actions: bindActionCreators(actions, dispatch),
+  };
+}
+
+export default connect(mapStateToProps, mapDispatchToProps)(GroupBy);