Begin translation and finish i18n system

static/locales/en.json

@@ -1,16 +0,0 @@
-{
-	"layout": {
-		"update_done": "Update completed.",
-		"wait_new_version_startup": "Waiting for the new version to start...",
-		"new_version": "New version reachable. Reloading...",
-		"switch_to_a_different_team": "Switch to a different team...",
-		"update_available": "Update available"
-	},
-	"error": {
-		"you_can_find_your_way_back": "You can find your way back",
-		"here": "here"
-	},
-	"index": {
-		"dashboard": "Dashboard"
-	}
-}

static/locales/fr.json

@@ -1,5 +0,0 @@
-{
-	"index": {
-		"dashboard": "Tableau de bord"
-	}
-}