Change config to camel case with backwards compatibility

This refactors the configs a bit to now use camel case everywhere.
This change should help to clean up the config interface and make it
better understandable.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

lib/web/auth/mattermost/index.js

@@ -16,7 +16,7 @@ let mattermostStrategy = new OAuthStrategy({
   tokenURL: config.mattermost.baseURL + '/oauth/access_token',
   clientID: config.mattermost.clientID,
   clientSecret: config.mattermost.clientSecret,
-  callbackURL: config.serverurl + '/auth/mattermost/callback'
+  callbackURL: config.serverURL + '/auth/mattermost/callback'
 }, passportGeneralCallback)
 
 mattermostStrategy.userProfile = (accessToken, done) => {
@@ -43,7 +43,7 @@ mattermostAuth.get('/auth/mattermost', function (req, res, next) {
 // mattermost auth callback
 mattermostAuth.get('/auth/mattermost/callback',
   passport.authenticate('oauth2', {
-    successReturnToOrRedirect: config.serverurl + '/',
-    failureRedirect: config.serverurl + '/'
+    successReturnToOrRedirect: config.serverURL + '/',
+    failureRedirect: config.serverURL + '/'
   })
 )