remove instructions from ImportDialogBox (#1022)

* remove instructions from ImportDialogBox

* link back to docs.metamaps.cc for import instructions

frontend/src/components/ImportDialogBox.js

@@ -6,7 +6,6 @@ class ImportDialogBox extends Component {
     super(props)
 
     this.state = {
-      showImportInstructions: false
     }
   }
 
@@ -15,21 +14,9 @@ class ImportDialogBox extends Component {
   }
 
   handleFile = (files, e) => {
-    // // for some reason it uploads twice, so we need this debouncer
-    // // eslint-disable-next-line no-return-assign
-    // this.debouncer = this.debouncer || window.setTimeout(() => this.debouncer = null, 10)
-    // if (!this.debouncer) {
-    //  this.props.onFileAdded(files[0])
-    // }
     this.props.onFileAdded(files[0])
   }
 
-  toggleShowInstructions = e => {
-    this.setState({
-      showImportInstructions: !this.state.showImportInstructions
-    })
-  }
-
   render = () => {
     return (
       <div className="import-dialog">
@@ -47,23 +34,7 @@ class ImportDialogBox extends Component {
         >
           Drop files here!
         </Dropzone>
-        <p>
-          <a onClick={this.toggleShowInstructions} style={{ textDecoration: 'underline', cursor: 'pointer' }}>
-            Show/hide import instructions
-          </a>
-        </p>
-        {!this.state.showImportInstructions ? null : (<div>
-          <p>
-            You can import topics and synapses by uploading a spreadsheet here.
-            The file should be in comma-separated format (when you save, change the
-            filetype from .xls to .csv).
-          </p>
-          <img src={this.props.exampleImageUrl} style={{ width: '100%' }} />
-          <p style={{ marginTop: '1em' }}>You can choose which columns to include in your data. Topics must have a name field. Synapses must have Topic 1 and Topic 2.</p>
-          <p>&nbsp;</p>
-          <p> * There are many valid import formats. Try exporting a map to see what columns you can include in your import data. You can also copy-paste from Excel to import, or import JSON.</p>
-          <p> * If you are importing a list of links, you can use a Link column in place of the Name column.</p>
-        </div>)}
+        <p>See <a href="https://docs.metamaps.cc/importing_and_exporting_data.html">docs.metamaps.cc</a> for instructions.</p>
       </div>
     )
   }