improve the positioning of graph tick labels

15 jobs for 2.4.2 in 307 minutes and 47 seconds (queued for 113 minutes and 16 seconds)
latest
Status Job ID Name Coverage
  Test
passed #6511
amd64 stable debian
debian_stable_amd64_deb

00:30:07

passed #6441
debian arm stable
debian_stable_arm_deb

00:32:53

passed #6510
i386 stable debian
debian_stable_i386_deb

00:35:43

passed #6439
osx v10.8 dmg
osx_10.8_amd64_dmg

00:21:08

passed #6509
dmg v10.11 osx
osx_amd64_dmg

00:20:46

passed #6508
amd64 v14.04 ubuntu
ubuntu_14.04_amd64_deb

00:28:14

passed #6507
i386 v14.04 ubuntu
ubuntu_14.04_i386_deb

00:31:34

passed #6506
amd64 v16.04 ubuntu
ubuntu_16.04_amd64_deb

00:33:25

passed #6440
windows i386
windows_i386_installer

01:13:54

failed #6434
debian stable amd64
debian_stable_amd64_deb

failed #6433
debian stable i386
debian_stable_i386_deb

failed #6438
osx v10.11 dmg
osx_amd64_dmg

failed #6436
ubuntu v14.04 amd64
ubuntu_14.04_amd64_deb

failed #6435
ubuntu v14.04 i386
ubuntu_14.04_i386_deb

failed #6437
ubuntu v16.04 amd64
ubuntu_16.04_amd64_deb