refactor: __unicode__ -> __str__ in models

- deprecation fix
Signed-off-by: David Haynes <dhaynes3@gmu.edu>

whats_open/website/models.py

@@ -20,7 +20,7 @@ class Category(TimeStampedModel):
         # Sort by name in admin view
         ordering = ['name']
 
-    def __unicode__(self):
+    def __str__(self):
         return '%s' % self.name
 
 class Facility(TimeStampedModel):
@@ -67,7 +67,7 @@ class Facility(TimeStampedModel):
             return True
         return False
 
-    def __unicode__(self):
+    def __str__(self):
         return self.name
 
 class Schedule(TimeStampedModel):
@@ -95,7 +95,7 @@ class Schedule(TimeStampedModel):
                 return True
         return False
 
-    def __unicode__(self):
+    def __str__(self):
         return self.name
 
 
@@ -151,7 +151,7 @@ class OpenTime(TimeStampedModel):
                 return False
         return True
 
-    def __unicode__(self):
+    def __str__(self):
         weekdays = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday',
                 'Saturday', 'Sunday']
         return '%s %s to %s %s' % (weekdays[self.start_day],