Merge: + client: handle client block and unblock from the top clients table

Closes #896

Squashed commit of the following:

commit 776de2ae0a62823b8968cff79a9fa7ba350d7f1c
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Thu Jan 30 11:13:41 2020 +0300

    - client: fix normalizeTextarea and blocking button

commit 399e6bc3893093632b09247eaf6493521a668c84
Author: Ildar Kamalov <i.kamalov@adguard.com>
Date:   Wed Jan 29 17:19:50 2020 +0300

    + client: handle client block and unblock from the top clients table

client/src/reducers/access.js

@@ -31,6 +31,10 @@ const access = handleActions(
             };
             return newState;
         },
+
+        [actions.toggleClientBlockRequest]: state => ({ ...state, processingSet: true }),
+        [actions.toggleClientBlockFailure]: state => ({ ...state, processingSet: false }),
+        [actions.toggleClientBlockSuccess]: state => ({ ...state, processingSet: false }),
     },
     {
         processing: true,