Fix to for logging switch on browsers having localStorage set to null 

applies to e.g. Midori browser on RPi.

Jira-issue: WP-1286
Merge pull request #77 from mlasak/patch-1

Fix to for logging switch on browsers having localStorage set to null
disable syncing of trustedList from PZP to PZH

fixes bug where an empty trustedList is synced to PZH (right after
enrollment) overriding the info of the existing PZH there, which made it
impossible for other PZPs to join this PZH.
Merge pull request #83 from aldafu/disable-trustedlist-sync-to-pzh

disable syncing of trustedList from PZP to PZH