[TW-1889] inherited urgency not shown in task information

_Christian Krause on 2017-01-30T09:45:21Z says:_

I am now working with urgency inheritance. As far as I can tell, the urgency is more or less correctly inherited by tasks blocking others. However, *task information* does not list the inherited urgency:

{code}
$ task 13 information

Name Value
ID 13
Description foo
Status Pending
Project test
This task is blocking 11 bar
Entered 2017-01-18 23:37:00 (11d)
Last modified 2017-01-26 15:51:36 (3d)
Tags test
Virtual tags BLOCKING PENDING READY TAGGED UNBLOCKED PROJECT
UUID c914f6f1-ed0d-4451-9387-fa45d355868d
Urgency 4.095

age 0.015 * 4 = 0.06
* -----
4.095
{code}

The urgency calculation is incomplete.
* ---

What I think would be useful here is the following:
1. calculate the urgency as usual
1. list the urgency of all tasks that this one is blocking
1. choose the highest value of either 1. or 2. and report this as the new urgency

Is this how the inherited urgency is calculated? I don't understand it entirely yet, because the urgency of my task 11 is a bit different than what above-mentioned task 13 has:

{code}
$ task 11 information

Name Value
ID 11
Description bar
Status Waiting
Project test
This task blocked by 13 foo
This task is blocking 12 baz
66 blubb
Entered 2017-01-18 23:32:29 (11d)
Waiting until 2017-01-31 00:00:00
Last modified 2017-01-27 13:57:18 (2d)
Tags test
Virtual tags BLOCKED BLOCKING TAGGED WAITING PROJECT
UUID b52492a1-36de-423b-af0e-dd0a32227d0c
Urgency 4.085

age 0.015 * 4 = 0.06
* -----
4.085
{code}

Where does the .1 difference come from?