diff --git a/lms/envs/common.py b/lms/envs/common.py
index d89e6760a7..83a4bd4181 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -48,6 +48,17 @@ MITX_FEATURES = {
     ## DO NOT SET TO True IN THIS FILE
     ## Doing so will cause all courses to be released on production
     'DISABLE_START_DATES': False,  # When True, all courses will be active, regardless of start date
+
+    'ENABLE_TEXTBOOK' : True,
+    'ENABLE_DISCUSSION' : True,
+
+    'ENABLE_SQL_TRACKING_LOGS': False,
+    'ENABLE_LMS_MIGRATION': False,
+
+    # extrernal access methods
+    'ACCESS_REQUIRE_STAFF_FOR_COURSE': False,
+    'AUTH_USE_OPENID': False,
+    'AUTH_USE_MIT_CERTIFICATES' : False,
 }
 
 # Used for A/B testing
diff --git a/lms/envs/dev_ike.py b/lms/envs/dev_ike.py
index fb7d980550..b6cd67dfd8 100644
--- a/lms/envs/dev_ike.py
+++ b/lms/envs/dev_ike.py
@@ -9,108 +9,9 @@ sessions. Assumes structure:
 """
 from .common import *
 from .logsettings import get_logger_config
+from .dev import *
 
-DEBUG = True
-TEMPLATE_DEBUG = True
+WIKI_ENABLED = False
+MITX_FEATURES['ENABLE_TEXTBOOK'] = False
+MITX_FEATURES['ENABLE_DISCUSSION'] = False
 
-MITX_FEATURES['DISABLE_START_DATES'] = True
-
-WIKI_ENABLED = True
-
-LOGGING = get_logger_config(ENV_ROOT / "log", 
-                            logging_env="dev",
-                            tracking_filename="tracking.log",
-                            debug=True)
-
-DATABASES = {
-    'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': ENV_ROOT / "db" / "mitx.db",
-    }
-}
-
-CACHES = {
-    # This is the cache used for most things. Askbot will not work without a 
-    # functioning cache -- it relies on caching to load its settings in places.
-    # In staging/prod envs, the sessions also live here.
-    'default': {
-        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
-        'LOCATION': 'mitx_loc_mem_cache',
-        'KEY_FUNCTION': 'util.memcache.safe_key',
-    },
-
-    # The general cache is what you get if you use our util.cache. It's used for
-    # things like caching the course.xml file for different A/B test groups.
-    # We set it to be a DummyCache to force reloading of course.xml in dev.
-    # In staging environments, we would grab VERSION from data uploaded by the
-    # push process.
-    'general': {
-        'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
-        'KEY_PREFIX': 'general',
-        'VERSION': 4,
-        'KEY_FUNCTION': 'util.memcache.safe_key',
-    }
-}
-
-# Dummy secret key for dev
-SECRET_KEY = '85920908f28904ed733fe576320db18cabd7b6cd'
-
-################################ OpenID Auth #################################
-MITX_FEATURES['AUTH_USE_OPENID'] = True
-
-INSTALLED_APPS += ('external_auth',) 
-INSTALLED_APPS += ('django_openid_auth',)
-#INSTALLED_APPS += ('ssl_auth',)
-
-#MIDDLEWARE_CLASSES += (
-#    #'ssl_auth.ssl_auth.NginxProxyHeaderMiddleware',		# ssl authentication behind nginx proxy
-#    )
-
-#AUTHENTICATION_BACKENDS = (
-#    'django_openid_auth.auth.OpenIDBackend',
-#    'django.contrib.auth.backends.ModelBackend',
-#    )
-
-OPENID_CREATE_USERS = False
-OPENID_UPDATE_DETAILS_FROM_SREG = True
-OPENID_SSO_SERVER_URL = 'https://www.google.com/accounts/o8/id'
-OPENID_USE_AS_ADMIN_LOGIN = False
-#import external_auth.views as edXauth
-#OPENID_RENDER_FAILURE = edXauth.edXauth_openid
-
-################################ DEBUG TOOLBAR #################################
-INSTALLED_APPS += ('debug_toolbar',) 
-MIDDLEWARE_CLASSES += ('debug_toolbar.middleware.DebugToolbarMiddleware',)
-INTERNAL_IPS = ('127.0.0.1',)
-
-DEBUG_TOOLBAR_PANELS = (
-   'debug_toolbar.panels.version.VersionDebugPanel',
-   'debug_toolbar.panels.timer.TimerDebugPanel',
-   'debug_toolbar.panels.settings_vars.SettingsVarsDebugPanel',
-   'debug_toolbar.panels.headers.HeaderDebugPanel',
-   'debug_toolbar.panels.request_vars.RequestVarsDebugPanel',
-   'debug_toolbar.panels.sql.SQLDebugPanel',
-   'debug_toolbar.panels.signals.SignalDebugPanel',
-   'debug_toolbar.panels.logger.LoggingPanel',
-
-#  Enabling the profiler has a weird bug as of django-debug-toolbar==0.9.4 and
-#  Django=1.3.1/1.4 where requests to views get duplicated (your method gets 
-#  hit twice). So you can uncomment when you need to diagnose performance 
-#  problems, but you shouldn't leave it on.
-#  'debug_toolbar.panels.profiling.ProfilingDebugPanel',
-)
-
-############################ FILE UPLOADS (ASKBOT) #############################
-DEFAULT_FILE_STORAGE = 'django.core.files.storage.FileSystemStorage'
-MEDIA_ROOT = ENV_ROOT / "uploads"
-MEDIA_URL = "/static/uploads/"
-STATICFILES_DIRS.append(("uploads", MEDIA_ROOT))
-FILE_UPLOAD_TEMP_DIR = ENV_ROOT / "uploads"
-FILE_UPLOAD_HANDLERS = (
-    'django.core.files.uploadhandler.MemoryFileUploadHandler',
-    'django.core.files.uploadhandler.TemporaryFileUploadHandler',
-)
-
-########################### PIPELINE #################################
-
-PIPELINE_SASS_ARGUMENTS = '-r {proj_dir}/static/sass/bourbon/lib/bourbon.rb'.format(proj_dir=PROJECT_ROOT)
diff --git a/lms/templates/course_navigation.html b/lms/templates/course_navigation.html
index 8bda22148d..84b0c04ca0 100644
--- a/lms/templates/course_navigation.html
+++ b/lms/templates/course_navigation.html
@@ -14,10 +14,16 @@ def url_class(url):
       <li class="courseware"><a href="${reverse('courseware', args=[course.id])}" class="${url_class('courseware')}">Courseware</a></li>
       <li class="info"><a href="${reverse('info', args=[course.id])}" class="${url_class('info')}">Course Info</a></li>
 % if user.is_authenticated():
+% if settings.MITX_FEATURES.get('ENABLE_TEXTBOOK'):
       <li class="book"><a href="${reverse('book', args=[course.id])}" class="${url_class('book')}">Textbook</a></li>
+% endif 
+% if settings.MITX_FEATURES.get('ENABLE_DISCUSSION'):
       <li class="discussion"><a href="${reverse('questions')}">Discussion</a></li>
+% endif 
 % endif
+% if settings.WIKI_ENABLED:
       <li class="wiki"><a href="${reverse('wiki_root', args=[course.id])}" class="${url_class('wiki')}">Wiki</a></li>
+% endif
 % if user.is_authenticated():
       <li class="profile"><a href="${reverse('profile', args=[course.id])}" class="${url_class('profile')}">Profile</a></li>
 % endif