Clean up .sh scripts

Clean up .sh scripts

Removed .sh scripts that are not needed.
Fill readme with a description of some of the things
that might be not visible at first glance
Refactor .sh scripts, remove not used or not needed parts
Fix a bug where pidof <package> does not work.
Change logging of the scripts and they way that app is run so
that the logs are in one place -> collector.logs
Fixed a bug where tomcat startup problems are not logged
Added log rotation with logrotate tool

Change-Id: I156328ab23d18a20072177ae8c5420772c3e2c7c
Signed-off-by: PawelSzalapski <pawel.szalapski@nokia.com>
Issue-ID: DCAEGEN2-610