change log and spec for wrt-plugins-tizen_0.4.31

change log and spec for wrt-plugins-tizen_0.4.31

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

[Issue] N/A
[Problem] findMessages with timestamp range filter bug fix
[Cause] findMessages with timestamp range filter bug fix
[Solution] findMessages with timestamp range filter bug fix

[Issue#] DCM-1610
[Problem] The text [null] appears in the notification area
[Cause] if JS Null value , it will be as [null]
[Solution] inserted checking null value.

[Issue] N/A
[Problem] findConversations filter updated for: from, to, cc, bcc
[Cause] findConversations filter updated for: from, to, cc, bcc
[Solution] findConversations filter updated for: from, to, cc, bcc

[Issue] N/A
[Problem] findMessage with id error bug fix
[Cause] findMessage with id error bug fix
[Solution] findMessage with id error bug fix

[Issue#] TDIS-5521
[Problem] Constructor is not nullable. but, null check is added to constructor
[Cause] N/A
[Solution] remove null check and just convert null to 0

[Issue#] N/A
[Problem] Some error case is not handled (getAppSharedURI)
[Cause] N/A
[Solution] add error handling case

[Issue] Prevent 53191, 53192
[Problem] Structurally dead code
[Cause]  Structurally dead code
[Solution] remove code

[Issue] N/A
[Problem] N/A
[Cause]  Core api's policy is changed
[Solution] apply to filter for find function

[Issue] N/A
[Problem] N/A
[Cause]  Core api's policy is changed
[Solution] apply to filter for find function

[Issue#] DCM-1574
[Problem] "daysOfTheWeek" attribute not updated.
[Cause] Wrong update routine for rrule array.
[Solution] Revise the rrule array attribute routine together with platform crash patch.

[Issue] N/A
[Problem] Previous precondition script could not insert call log because of supporting SMACK.
[Solution] Fixed the precondition script.