Correct allow_failures for Travis

Django 1.8 supports Python 3.5. It does raise a DeprecationWarning,
which is safe to ignore. We only care about DeprecationWarnings in our
own code.

And it seems that Travis wants all allowed failures listed explicitly,
so we do that. It should now pass again.

.travis.yml

 matrix:
     exclude:
         - python: 3.2
-          env: DJANGO=Django==1.9b1
+          env: "DJANGO=Django==1.9b1"
         - python: 3.3
-          env: DJANGO=Django==1.9b1
+          env: "DJANGO=Django==1.9b1"
         - python: 3.5
-          env: DJANGO=Django==1.7.10
-
+          env: "DJANGO=Django==1.7.10"
     allow_failures:
-      - env: DJANGO=Django==1.9b1
-      - python: 3.5
-        env: DJANGO=Django==1.8.5
+        - python: 2.7
+          env: "DJANGO=Django==1.9b1"
+        - python: 3.3
+          env: "DJANGO=Django==1.9b1"
+        - python: 3.4
+          env: "DJANGO=Django==1.9b1"
+        - python: 3.5
+          env: "DJANGO=Django==1.9b1"
 
 
 before_install:

runtests.py

         # thread safe. Behaviour with multiple threads is undefined.
         warnings.filterwarnings('error', category=DeprecationWarning)
         warnings.filterwarnings('error', category=RuntimeWarning)
-        libs = r'(sorl\.thumbnail.*|bs4.*|webtest.*)'
+        libs = r'(sorl\.thumbnail.*|bs4.*|webtest.*|inspect.*)'
         warnings.filterwarnings(
             'ignore', r'.*', DeprecationWarning, libs)