Random fixes (#727)

* extract missing localizations from last master <- pr-merge

Signed-off-by: Roman <ixrock@gmail.com>

* fix: prevent app-crash in preferences in case of incorrect http-proxy value

Signed-off-by: Roman <ixrock@gmail.com>

* fix: don't repeat ipc-sync message to main renderer process/window when sending to frames

Signed-off-by: Roman <ixrock@gmail.com>

src/renderer/components/+preferences/preferences.tsx

@@ -13,7 +13,6 @@ import { Input } from "../input";
 import { Checkbox } from "../checkbox";
 import { Notifications } from "../notifications";
 import { Badge } from "../badge";
-import { Spinner } from "../spinner";
 import { themeStore } from "../../theme.store";
 import { history } from "../../navigation";
 import { Tooltip } from "../tooltip";
@@ -58,7 +57,7 @@ export class Preferences extends React.Component {
       this.helmAddedRepos.clear();
       repos.forEach(repo => this.helmAddedRepos.set(repo.name, repo));
     } catch (err) {
-      Notifications.error(err);
+      Notifications.error(String(err));
     }
     this.helmLoading = false;
   }