.serverinfo improved, updated changelog, added seconds to .convert

src/NadekoBot/data/strings/commands/commands.en-US.yml

@@ -437,9 +437,9 @@ remindlist:
     - "1"
     - "server 2"
 serverinfo:
-  desc: "Shows info about the server the bot is on. If no server is supplied, it defaults to current one."
+  desc: "Shows info about the server with the specified ID. The bot has to be on that server. If no server is supplied, it defaults to current one."
   args:
-    - "Some Server"
+    - "123123132233"
 channelinfo:
   desc: "Shows info about the channel. If no channel is supplied, it defaults to current one."
   args:

src/NadekoBot/data/units.json

@@ -719,6 +719,17 @@
     "UnitType": "time",
     "Modifier": 60.0
   },
+  {
+    "Triggers": [
+      "second",
+      "seconds",
+      "sec",
+      "secs",
+      "s"
+    ],
+    "UnitType": "time",
+    "Modifier": 1
+  },
   {
     "Triggers": [
       "year",