wip - attempt to notate exactly how I am used to play the pauses

I have always been weak at rythm-feeling and it's quite hard for me to notate time and rythm ...
remove obsolete notices
+1 ant.
gemfile: pslm gem
ant. for the Vigil
'guitar' canticle Ap 19: little progress

a bit of work done quite a long time ago
quality notices
the 'real' rhythm as I during the months settled to sing it
reorganize the funny 3/4 measures for better readability
Merge branch 'guitarpsalms-exact-timing'

Conflicts:
	zalm130.ly
redundant time signatures removed; one 4/4 measure divided
build errors fixed
forgotten alleluia
ant. for the Vigil