implement assigning and moving properties; make ResourceManager move...

implement assigning and moving properties; make ResourceManager move assignment consistent with copy assignment
9 jobs for dev-mh-assign in 4 minutes and 19 seconds
Status Job ID Name Coverage
  Test
passed #74788
VS2015
VS2015-32-bit

00:01:16

passed #74787
VS2015
VS2015-64-bit

00:01:20

passed #74786
VS2017
VS2017-32-bit

00:01:09

passed #74785
VS2015
VS2017-64-bit

00:01:19

passed #74782
Linux
clang-c++11

00:03:53

passed #74784
Linux
cppcheck

00:00:26

passed #74789
Linux
doc

00:00:17

passed #74781
Linux
gcc-c++11

00:04:18

passed #74783
Apple
macos-c++11

00:01:38