Added circular progress to the filter

src/Components/SearchExpansionPanel/SearchExpansionPanel.js

@@ -10,6 +10,9 @@ import SearchEPTiposRec from "./SearchEPTiposRec";
 import SearchEPEtapasEns from "./SesrchEPEtapasEns";
 import SearchEPIdiomas from "./SearchEPIdiomas";
 import { TextField } from "@material-ui/core";
+import Grid from '@material-ui/core/Grid'; 
+import CircularProgress from '@material-ui/core/CircularProgress';
+
 const ExpansionPanel = withStyles({
   root: {
     border: "1px solid rgba(0, 0, 0, .125)",
@@ -88,15 +91,28 @@ export default function SearchExpansionPanel(props) {
           aria-controls="panel1d-content"
           id="panel1d-header"
         >
-          <Typography
-            style={{
-              fontSize: "18px",
-              textTransform: "uppercase",
-              fontWeight: "500"
-            }}
+          <Grid
+            container 
+            direction="row"
+            justify="space-between"
           >
-            Filtros
-          </Typography>
+            <Grid item>
+              <Typography
+                style={{
+                  fontSize: "18px",
+                  textTransform: "uppercase",
+                  fontWeight: "500"
+                }}
+              >
+                Filtros
+              </Typography>
+            </Grid>
+            <Grid item>
+            {
+              props.onFiltering ? <CircularProgress size={24} color="secondary" /> : null
+            }
+            </Grid>
+          </Grid>
         </ExpansionPanelSummary>
       </ExpansionPanel>