Changes related to GetItemsCount Method added in cachemdl

Fix: Panic for single object is not included in final result and bulk queries

See merge request !88

1. Fix: Panic if data to bulk functions is empty array.

1. Add: Process post hook for nil data

1. Fix: Panic if selected single object is not included in final result. The post hook was dereferrencing nill data resulting in panic.

Fix: Role based access by checking group

See merge request !87

Dynamic  form evaluation

See merge request !86

Fix: Revert coremongo panic fix.

See merge request !85

1. Fix: Revert coremongo panic fix as its breaking existing sls functionality. Need to check for empty arrays instead of empty string in existing code.

Dpk random int generation fix

See merge request !83

Fix: Coremongo for nil rs and statemdl

See merge request !84

1. Fix: Statemdl need to be initialised for DAL, resulting in panic if not initialised.

1. Fix: Nil pointer dereference error for Result.

To verify new changes working as expected.

Provided seed based on time, to generate unpredicted  random key generation.

1. Fix: GC cache tests

FIx: Remove GC Cache dependency from cachemdl

See merge request !82

1. FIx: Remove GC Cache dependency from cachemdl

1. Fix: Rolebased services can be accessed by restricted user

Add: prefer connection to primary

See merge request !81

1. Fix: failed to connect to primary 

1. Add: prefer connection to primary

Added grid fs support

See merge request !78

Fix: Email text types for boly and plain body

See merge request !80

1. Fix: Email text types for boly and plain body

Fix: Sent email is plain text if alternate text is empty

See merge request !79

1. Fix: Sent email is plain text if alternate text is empty
2. Add: Parse Plain text in normal v2 call

Add: Alternate text for email

See merge request !77

1. Add: Method to parse and set plainbody

1. Add: Method to add alternate text fro email

Add: Message Id header to avoid spam mails

See merge request !76

This reverts commit 6dd7ec5d.

1. Add: Message Id header to avoid spam mails

Roshanp fdb

See merge request !74