Set PATH preference correct

[hvdwolf]

For pimatic 0.9 we need an updated node version which is installed in /usr/local/bin.
The pimatic service script uses the PATH statement PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/usr/local/bin:/opt/node/bin
This means that always the old 0.10 version is used in /usr/bin

For 0.9 the pimatic service script should contain the following PATH statement
PATH=/usr/local/bin:/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/opt/node/bin

That has now been set with this patch

[mwittig]

Thanks. I am closing this one in favor of #1040