Enable RUN-OR-RAISE to focus floating group

When raising a window on a floating group while on another group, the
group wasn't actually focused. It did when switching to a tiling group.
Fix finding current head on empty floating group
Merge pull request #126 from jorams/run-or-raise-focus-float

Enable RUN-OR-RAISE to focus floating group
Merge pull request #127 from jorams/float-current-head-fix

Fix finding current head on empty floating group
Fixing issue with #117 to actually get ~/.config/stumpwm/config correctly
Fixing issue for .stumpwmrc as well
Fixing with-data-file macro
Fix incorrect parenthesis, fixes #130
Merge pull request #131 from jorams/fix-130-compile-stumpwm-number-of-arguments

Fix incorrect parenthesis, fixes #130