Top level does not show system information

[Petaris]

In v5.0.6 information about the system was included, this is not present in v5.2.2. This was also included in PDF export and made identifying the system the report was for easier.

Example:

kSar Info:

OS Type: Linux (automatically detected)
Kernel Release: 2.6.32-642.15.1.el6.x86_64
Hostname: test1
Start of SAR: 03/19/17
End of SAR: 03/19/17

Time range information:
First data point: Sun Mar 19 00:00:02 CDT 2017
Last data point: Sun Mar 19 19:20:01 CDT 2017

Graph range:
First data point: Sun Mar 19 00:00:02 CDT 2017
Last data point: Sun Mar 19 19:20:01 CDT 2017

Detected bottlenecks:
CPU all usr over 25.0
CPU 1 idle under 0.0
CPU 1 usr over 25.0
CPU 2 idle under 0.0
CPU 3 usr over 25.0
CPU 0 idle under 0.0
CPU all idle under 0.0
CPU 2 usr over 25.0
CPU 2 wio over 25.0
CPU 3 idle under 0.0
CPU 0 usr over 25.0
CPU 0 wio over 25.0