Renamed all watcher files to observer files
new class appobserver, responsible to monitor system daemons. Is also able to restart them.
Added pollTime node to applications in config.xml
New inline function in globalutils.h to execue a system command and capture it's output
procobserver is a new class derived from observer and is itself a base class to memory and cpuobserver classes
Removed all references to boost::filesystem::path. It is not thread safe :/

Signed-off-by: Christian Rapp <crappbytes@gmail.com>