General fixes and PEP8 enforcement (#258)

* Fixing index page links when you deploy on a subdirectory

* Updating travis for pep8

* autopep8 with just formatting changes

CTFd/plugins/challenges/__init__.py

@@ -1,10 +1,12 @@
 from CTFd.plugins.keys import get_key_class
 from CTFd.models import db, Keys
 
+
 class BaseChallenge(object):
     id = None
     name = None
 
+
 class CTFdStandardChallenge(BaseChallenge):
     id = 0
     name = "standard"
@@ -19,11 +21,12 @@ class CTFdStandardChallenge(BaseChallenge):
 
 
 CHALLENGE_CLASSES = {
-    0 : CTFdStandardChallenge
+    0: CTFdStandardChallenge
 }
 
+
 def get_chal_class(class_id):
     cls = CHALLENGE_CLASSES.get(class_id)
     if cls is None:
         raise KeyError
-    return cls
+    return cls

CTFd/plugins/keys/__init__.py

@@ -11,6 +11,7 @@ class BaseKey(object):
     def compare(self, saved, provided):
         return True
 
+
 class CTFdStaticKey(BaseKey):
     id = 0
     name = "static"
@@ -36,8 +37,8 @@ class CTFdRegexKey(BaseKey):
 
 
 KEY_CLASSES = {
-    0 : CTFdStaticKey,
-    1 : CTFdRegexKey
+    0: CTFdStaticKey,
+    1: CTFdRegexKey
 }
 
 
@@ -45,4 +46,4 @@ def get_key_class(class_id):
     cls = KEY_CLASSES.get(class_id)
     if cls is None:
         raise KeyError
-    return cls
+    return cls