&water: Ignore file in data/

This commit moves nowater.txt from the root of the project to the data
directory, where it can be kept private.

plugins/watered.py

@@ -15,12 +15,12 @@ verbs = [
 
 class IgnoredUsers:
     def __init__(self):
-        if 'nowater.txt' not in listdir():
-            open('nowater.txt', 'w').close()
+        if 'date/nowater.txt' not in listdir():
+            open('date/nowater.txt', 'w').close()
 
     @property
     def users(self):
-        with open('nowater.txt', 'r') as w:
+        with open('date/nowater.txt', 'r') as w:
             u = [i.strip() for i in w.readlines() if i.strip()]
         return u