Fix spring component scan by tasks-lib

- Due: component scan use "base-package" which is not recursive or fail because two different paths of one package
- Use more specific base_package for taskManager in tasks-lib application context
Revert "Fix spring component scan by tasks-lib"

This reverts commit d86e435defd15ba2e6caa4e62273ce0aa21bbfa5.
CORE: save up 1 DB query in GroupsManager.addMember()

- We can check authz in method on Group for VOADMIN, so no need to
  call getVo(sess, Group). Also check for matching VO can be done
  on Group's and Member's voIds.
Merge pull request #224 from zlamalp/simplify

CORE: save up 1 DB query in GroupsManager.addMember()
Change properties and logs dirs from "perunv3" to "perun"

- change the path in main pom.xml file
- change the path in core for getPropertyFromConfiguration (Utils)
- change the path in rpc-lib for getPropertyFromConfiguration

NEED to be done, before apply this commit:
- create dir /etc/perun with same rights like /etc/perunv3
- create dir /var/log/perun with same rights like /var/log/perunv3
- change /home/perun/tomcat-devel/bin/setenv.sh parameter for
	log4j.properties file to /etc/perun if it's hardcoded here
Merge pull request #227 from stavamichal/change_properties_and_log_dirs_from_perunv3_to_perun

Change properties and log dirs from perunv3 to perun
Formating of source code - trailing whitespaces

Remove all trailing whitespaces
Format of source code - indentation

Indentation is made by tab now.