Create manual variant - clean HGVS and show grid

**Cleaning HGVS**

Try to enter ```NM_019024.3(HEATR5B):c.5317+5G​>A```

Gives error:

```
Error parsing h: 'Invalid HGVS cDNA allele "5317+5G​>A"'
```

This is due to invisible characters being removed from search, but not manual variant entry

**Grid**

The grid gets crazy long and the page takes ages to load. Use datatables grid