Update copyright, eula and contact details (#690)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/renderer/themes/kontena-dark.json

@@ -1,7 +1,7 @@
 {
   "name": "Lens Dark Theme",
   "type": "dark",
-  "author": "Lakend Labs",
+  "author": "Mirantis",
   "colors": {
     "blue": "#3d90ce",
     "magenta": "#c93dce",
@@ -102,4 +102,4 @@
     "radioActiveBackground": "#36393e",
     "menuActiveBackground": "#36393e"
   }
-}
+}

src/renderer/themes/kontena-light.json

@@ -1,7 +1,7 @@
 {
   "name": "Lens Light Theme",
   "type": "light",
-  "author": "Lakend Labs",
+  "author": "Mirantis",
   "colors": {
     "blue": "#3d90ce",
     "magenta": "#c93dce",
@@ -103,4 +103,4 @@
     "radioActiveBackground": "#f1f1f1",
     "menuActiveBackground": "#e8e8e8"
   }
-}
+}