Update change log and spec for wrt-plugins-tizen_0.2.77

Update change log and spec for wrt-plugins-tizen_0.2.77

Changed Modules : Contact

[Version] 0.2.77
[Project] GT-I8800, Public
[Title] SEL Verification
[Team] WebAPI
[BinType] PDA
[Customer] Open

[Issue#] N_SE-8584
[Problem] Lock-up when the change listener callback invoked.
[Cause] The change listener callback invoked on the main thread.
[Solution] Changed to pass event to contact thread.

[SCMRequest] N/A