Update change log and spec for wrt-plugins-tizen_0.4.53

Update change log and spec for wrt-plugins-tizen_0.4.53

[model] REDWOOD
[binary_type] PDA
[customer] OPEN

[Messaging] Logs extended for Attachment save/load routines

[Issue#] N/A
[Problem] wrong exception is thrown
[Cause] N/A
[Solution] fix exception handling code

[Issue] Prevent 63229
[Problem] Resource leak
[Cause] Resource leak
[Solution] Resource leak

[Issue#] N/A
[Problem] when call kill API many times, some success callback is not called.
[Cause] context event callback is unset when success callback is called
[Solution] unset event callback when ApplicationManager is destroyed.

[Issue] N_SE-45751
[Problem] Force close occur when tap on Enter Number button in Chatter
[Cause] Force close occur when tap on Enter Number button in Chatter
[Solution] remove dlog

[team] WebAPI
[request] N/A
[horizontal_expansion] N/A

UnitTC passed.
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