Add script to load (new) kernel via kexec on arch.

Based on https://wiki.archlinux.org/index.php/Kexec.
Add script to query swap usage.

Based on script by Erik Ljungstrom,
see http://northernmost.org/blog/find-out-what-is-using-your-swap/ .
Add script to extract a range of pages from a PDF.
Add script to merge several PDFs into one document.
Add script to mount .hidrive folder in local home from Strato HiDrive.

Encrypted via encfs.
Add script for git that changes the name and mail address of an author.
Add script to generate self-signed certificate using certtool.
ssl-tls/self-signed-cert.sh: Fall back to --bits if --sec-param is not available.

Debian stable strikes again... -.-
ssl-tls/self-signed-cert.sh: Generate certificate iff private key was generated.
Add scripts to generate a certificate authority, certificate requests and to sign requests via certtool.
Add simple script to trim mounted filesystems on SSDs.
Add script to switch to internal display of laptop from externally connected monitors.
Remove kexec() script for ArchLinux, obsoleted by kexec.target of systemd.
fstrim.sh -> maintenance/fstrim.sh
Add maintenance scripts reporting status of RAID, SMART and system updates.

Installed via stow.
./maintenance/reports/update-info.sh: Drop error messages of which command.
Add script to generate random pass*phrase*s.

Credits to @climagic on Twitter.
Add script to launch rtorrent bound to tun0 interface.