More work on Network stage.

src/locales/en.json

@@ -10,6 +10,8 @@
   "license.license": "This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.\n\nThis program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.\n\nYou should have received a copy of the GNU General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.",
   "license.accept_text": "By pressing 'Accept' button you agreening to terms described above.",
   "license.button.accept": "Accept",
+  "license.button.decline": "Decline",
   "network.reuse_checkbox_caption": "Reuse settings?",
-  "network.reuse_question": "Do you want to apply current network settings to installing system?"
+  "network.reuse_question": "Do you want to apply current network settings to installing system?",
+  "network.checking": "Checking network connectivity, please wait..."
 }