[DEA] Optimize the APIs on subject profile

[mahalakshme]

AC:
Now all the below calls are made when clicking on a subject. Instead do them only when needed.

• /msgs and /msgsNotYetSent need to load only on clicking on profile
• programSummaryRule for the same program enrolment loading more than once - The call can go only when the user opens the ProgramSummary expand icon
• Do /web/forms/formUuid once only when expand icon on Enrolment details is clicked
• /eligibleProgramEncounters and /eligibleGeneralEncounters calls can be made when clicking on 'New Form'. New form can be displayed even if only one encounter present.