Updating notifications

### Step 1: Please describe your environment

* ZeroNet version: 3868,3870
* Operating system: Linux
* Web browser: na
* Tor status: not available/always/disabled
* Opened port: yes/no
* Special configuration: na

### Step 2: Describe the problem:
There is a problem with updating from older version. The message on Hello page and Update page shows misleading information that Zeronet bundle is up to date. Both Hello and Update page should provide information that manual update actions are required. Also link to instructions.
If user doesn't follow Zeronet development is not even aware of the newer version and potential security issues of older version.

#### Steps to reproduce:
Check Hello Zeronet page and http://127.0.0.1:43110/1UPDatEDxnvHDo7TXvq6AEBARfNkyfxsp/