Add Latvian translation (#171)

Co-Authored-By: ℂ𝕠𝕠𝕠𝕝 (𝕘𝕚𝕥𝕙𝕦𝕓.𝕔𝕠𝕞/ℂ𝕠𝕠𝕠𝕝) <[email protected]>

Author: fregante

readme.md

@@ -38,6 +38,8 @@ It's available in 12 languages:
 - русский
 - Türkçe
 - Nederlands
+- Polski
+- Latviešu
 
 You can suggest improvements or new languages using the `web-ext-translator` web tool:
 

source/_locales/lv/messages.json

@@ -0,0 +1,48 @@
+{
+	"disAll": {
+		"message": "Atspējot visus",
+		"hash": "a9f66d43cfde31fd3cd61c3627eec653"
+	},
+	"enableAll": {
+		"message": "Iespējot visus",
+		"hash": "bff1a5f49fdf6aef0eff0315299dea83"
+	},
+	"extDesc": {
+		"message": "Skatīt, iespējot, atspējot, viegli noņemt paplašinājumus.",
+		"hash": "557ac2dd0ce9b4249f7dc37868bcfccf"
+	},
+	"extName": {
+		"message": "Viena klikšķa paplašinājumu pārvaldnieks",
+		"hash": "9f7e3f659272f7b34a4073ddd8e29658"
+	},
+	"gotoOpt": {
+		"message": "Iestatījumi…",
+		"hash": "0912d504999e2cb4f65b37eddb39b7a7"
+	},
+	"hideInfoMsg": {
+		"message": "Paslēpt šo",
+		"hash": "814f376f8a44776d5b80020e1327d173"
+	},
+	"manage": {
+		"message": "Paplašinājuma lapa…",
+		"hash": "a93cc3eb11188cfa36bc2639e0f5ea89"
+	},
+	"openUrl": {
+		"message": "Skatīt interneta veikalā",
+		"hash": "54c9abfc9842db7d4a2c0b692d15140c"
+	},
+	"searchTxt": {
+		"message": "Meklēt pēc nosaukuma…",
+		"hash": "1220702106584c8c90c0f41c486a3e0b"
+	},
+	"undoInfoMsg": {
+		"message": "Jūs varat atsaukt (ar <kbd>Ctrl+Z</kbd>) un atcelt savu pēdējo darbību, līdz aizverat šo uznirstošo logu.",
+		"hash": "8044307e478d0cedbc81a0cba56f601d"
+	},
+	"uninstall": {
+		"message": "Noņemt šo paplašinājumu",
+		"hash": "a04a561e0b5c8b0210a17382781cabd1"
+	},
+
+	"__WET_LOCALE__": {"message": "lv"}
+}