Correctly handle Num_Lock.

Find out which modifier key is used by Num_Lock (`x_numlock_mod()`) and
register grabs for both variants: modifier present/not present.
Merge pull request #107 from Necoro/master

Fix handling of NumLock
set width of layouts correctly on dynamic width

fix #110
show pango markup errors only once

see also #111
compare summary & body when looking for duplicates

this way similar notifications with different progres hint are seen as duplicates.

fix #114
don't increment dup_count when progess differs

work around the fact that notify-send doesn't expose the replaces-id.
set _NET_WM_WINDOW_TYPE (thanks lexming)

fix #113
Add "show_indicators" option

Add an option for disabling marking messages containing URLs or actions.
This means that messages will not be displayed with "(U)" or "(A)"
before them, but you can still use the context menu on them.
Merge pull request #117 from aliasbind/master

Add "show_indicators" option
Fix memory leak in URL scanning code
note about compile errors with outdated config.h
fix dynamic width calculation
Merge pull request #133 from progandy/master

fix dynamic width calculation
Little adjustments

Corrected text filling to 72 columns, indentations between lines, some miswriting (“<s/>”), points, caps, <pro://url/file.html> syntax, etc.
make notification stacking optional

see #137
Merge remote-tracking branch 'galex-713/patch-1' into merge

Conflicts:
	dunstrc