Merge: + client: trim DNS blocklists fields on blur

Close #1634

Squashed commit of the following:

commit 5f38da50b2075a9b5967aed39b62a8ab05e57a1c
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Tue May 12 20:02:05 2020 +0300

    + client: Trim fields on blur

client/src/components/Filters/Form.js

@@ -28,6 +28,7 @@ const Form = (props) => {
                         className="form-control"
                         placeholder={t('enter_name_hint')}
                         validate={[required]}
+                        normalizeOnBlur={data => data.trim()}
                     />
                 </div>
                 <div className="form__group">
@@ -39,6 +40,7 @@ const Form = (props) => {
                         className="form-control"
                         placeholder={t('enter_url_or_path_hint')}
                         validate={[required, isValidPath]}
+                        normalizeOnBlur={data => data.trim()}
                     />
                 </div>
                 <div className="form__description">