Add ability to trim the value from <Input> (#3333)

- If set (default = false) then the input will be trimmed of whitespace
  before validation and before submit

- Use trim on all input's that use the systemName validator

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/renderer/components/+namespaces/add-namespace-dialog.tsx

@@ -100,6 +100,7 @@ export class AddNamespaceDialog extends React.Component<Props> {
               required autoFocus
               iconLeft="layers"
               placeholder="Namespace"
+              trim
               validators={systemName}
               value={namespace} onChange={v => this.namespace = v.toLowerCase()}
             />