Update agl-service-windowmanager-2017

Update agl-service-windowmanager-2017

This commit includes followings

e4fcbf1 Fix the race condition of HomeScreen
2796f54 Remove useless functions
320122b Fix XDG application shrinks
f25e251 Fix timer
c6f9a9b Revert "Add PolicyManager as plugin"
e4222ca Revert "Add policy table generated by ZIPC for EXAMPLE"
67f414f Add policy table generated by ZIPC for EXAMPLE
99b6f4d Add PolicyManager as plugin

Change-Id: Ied0fe9841daa71897e86b3639822877b2b1fab9f
Signed-off-by: Kazumasa Mitsunari <knimitz@witz-inc.co.jp>