Enable other browsers testing

The cookies issue is reported to be fixed.
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/tests/test_selenium.py

@@ -136,22 +136,20 @@ EXTRA_PLATFORMS = {
         'browserName': 'chrome',
         'platform': 'XP',
     },
-    # Following browsers do not work correctly store cookies with Sauce labs:
-    # http://support.saucelabs.com/entries/20629691
-    # 'Opera': {
-    #     'browserName': 'opera',
-    #     'platform': 'WIN7',
-    # },
-    # 'MSIE10': {
-    #     'browserName': 'internet explorer',
-    #     'version': '10',
-    #     'platform': 'WIN8',
-    # },
-    # 'MSIE9': {
-    #     'browserName': 'internet explorer',
-    #     'version': '9',
-    #     'platform': 'VISTA',
-    # },
+    'Opera': {
+        'browserName': 'opera',
+        'platform': 'WIN7',
+    },
+    'MSIE10': {
+        'browserName': 'internet explorer',
+        'version': '10',
+        'platform': 'WIN8',
+    },
+    'MSIE9': {
+        'browserName': 'internet explorer',
+        'version': '9',
+        'platform': 'VISTA',
+    },
 }