nano changes (#16)

* nano icon

* add nano + update main json

---------

Co-authored-by: ryleedavis <rylee@cypherstack.com>

data/themes.json

@@ -4,7 +4,7 @@
             "name": "Chan",
             "id": "chan",
             "version": 3,
-            "sha256": "0972833d5493ea7e5d1238e6b69e68cad12863b2550325806e9aa8b921353c23",
+            "sha256": "14130a4618a335d5b661e7e6eed3818eba013bd7dd77ad48d49d960181d9c6f2",
             "size": "~77 MB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/chan-theme.png"
         },
@@ -12,7 +12,7 @@
             "name": "Dark",
             "id": "dark",
             "version": 3,
-            "sha256": "e6014929dad1c7ede32d0b16bcdce4256313cc7a384a68c71354e45a7b731efc",
+            "sha256": "950361903127fd327d7ac42970b99e56d3c7d1ad5ed85adecdc086c348c48d84",
             "size": "~605 kB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/dark-theme.png"
         },
@@ -20,7 +20,7 @@
             "name": "Dark Chan",
             "id": "dark_chan",
             "version": 3,
-            "sha256": "594b8d4e0cfbbb24b80438d5d6d6239e28cd39dfdfcaecee6a95453805e3b8bb",
+            "sha256": "c5e225d765ff9ce83194d1c40515dadf728722a4cfb0e00dc1a2183a3a5c5b4b",
             "size": "~77 MB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/darkchans-theme.png"
         },
@@ -28,7 +28,7 @@
             "name": "Forest",
             "id": "forest",
             "version": 3,
-            "sha256": "1b6e4376ee68bcc08f20b0ac93190b51198f5bcda8d3ca26cacfc99666e7f377",
+            "sha256": "5f8eeb437763ca2668ede715b9315512aecf3341720525d6a7b33f533f7afbbc",
             "size": "~970 kB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/forest-theme.png"
         },
@@ -36,7 +36,7 @@
             "name": "Fruit Sorbet",
             "id": "fruit_sorbet",
             "version": 3,
-            "sha256": "524ac32c756df7248176e274fc6d91d3a1e727c20e7827c77011260a91ed8c2d",
+            "sha256": "c5b6932fd4fc4709ed207117964ca23fd745b41ce61e9b97dec158d9afbca40a",
             "size": "~747 kB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/fruit-sorbet.png"
         },
@@ -44,7 +44,7 @@
             "name": "Light",
             "id": "light",
             "version": 3,
-            "sha256": "2d3a66cc38e548d2f5ba4c4b385028021950ea11bdb4f45e33a7504e1e5a54a5",
+            "sha256": "d14a0ba3d8425e382416b6aceb16ffc2d85f4997fcd73d0b9b1ff72f4db9080e",
             "size": "~564 kB",
             "previewImageUrl": ""
         },
@@ -52,7 +52,7 @@
             "name": "Ocean Breeze",
             "id": "ocean_breeze",
             "version": 3,
-            "sha256": "912da03dca3f3fcf50d2b40d55e6ccd0d9d4a89b6a5e064079aa169d267aad46",
+            "sha256": "5ead8e27cc74f93de438486c18a99e467be86b29019757fac1f2a3ded30d18ba",
             "size": "~3 MB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/ocean-breeze.png"
         },
@@ -60,7 +60,7 @@
             "name": "OLED Black",
             "id": "oled_black",
             "version": 3,
-            "sha256": "1ec882f50be65a776521a961bbeff448c6073a72aac8ceea4a029bac8e6f1206",
+            "sha256": "d530edc3321e1b1649385ca23c1b4febdc48ccdd9e7e30ad579b0ed574b17c92",
             "size": "~626 kB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/orange-dark-theme.png"
         },
@@ -68,7 +68,7 @@
             "name": "Orange",
             "id": "orange",
             "version": 3,
-            "sha256": "5b050c8e1b4549a33de3f048fb85a9c6892864931eba92ff81eb7663006e3020",
+            "sha256": "efe0ec0a7c82fd9e847d7b76adce4924e1504cfc82d0abf00c0c3b9825016459",
             "size": "~177 kB",
             "previewImageUrl": "https://themes.stackwallet.com/previews/orange-theme.png"
         }