Visible accounts for dapps (default whitelist) (#3898)

* Add APIs for Dapp management

* Move AddDapps modal

* Add DappsPermissions Modal (basics)

* Allow whitelist editing

* Add select/unselect tests

* Case

* Case

* Modal render/non-render tests

* UI made slightly prettier

* Adjust spacing

* Allow get/set of null for default whitelist (all)

* Allow null = all for selection

* Adjust selected background

* Address valid comment on formatters location

js/src/modals/AddDapps/addDapps.css

@@ -0,0 +1,39 @@
+/* Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+/* This file is part of Parity.
+/*
+/* Parity 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.
+/*
+/* Parity 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.
+/*
+/* You should have received a copy of the GNU General Public License
+/* along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+.description {
+  margin-top: .5em !important;
+}
+
+.list {
+  .background {
+    background: rgba(255, 255, 255, 0.2);
+    margin: 0 -1.5em;
+    padding: 0.5em 1.5em;
+  }
+
+  .header {
+    text-transform: uppercase;
+  }
+
+  .byline {
+    font-size: 0.75em;
+    padding-top: 0.5em;
+    line-height: 1.5em;
+    opacity: 0.75;
+  }
+}