Remove console.logs

Using console in production is generally undesirable due to
performance loss and security concerns. Errors were changed
to console.error and console.logs were removed.

browser/main/lib/ConfigManager.js

@@ -87,7 +87,6 @@ function validate (config) {
 }
 
 function _save (config) {
-  console.log(config)
   window.localStorage.setItem('config', JSON.stringify(config))
 }