Merge branch 'propmgr' into 'master'

Propmgr

Added some more convenience to the PropertyManager class.

See merge request !85
7 jobs for master in 21 minutes and 29 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #9873
Linux
clang-c++11

00:21:28

passed #9875
Linux
clang-c++98

00:16:17

passed #9878
Linux
cppcheck

00:00:29

passed #9872
Linux
gcc-c++11

00:05:11

passed #9874
Linux
gcc-c++98

00:04:41

passed #9876
Apple
macos-c++11

00:16:28

passed #9877
Apple
macos-c++98

00:15:23