Sunbird 2.5.0 release

Merge pull request #747 from PradyumnaNagendra/release-2.5.0

Issue #000 fix: Merging cqls from release-lms-2.5.0 to release-2.5.0

course-batch-refactoring

Merge pull request #564 from rahul-tarento/course-batch-refactoring

es sync changes for bulk insert and async read

creating tag from release-1.14-sp3

Merge pull request #410 from project-sunbird/SB-11048

Sb 11048

release-1.14-sp3-bk

Merge pull request #387 from project-sunbird/es-type-update

Issues #SB-10339 feat: chnages for type name from batch to coursebatch

creating tag from release-1.13 branch

Merge pull request #306 from project-sunbird/emailFix

Issue fix to convert all email to lowerCase

creating tag from release-1.12 branch

Adding cassandra migration jar

hot fixes for system actor initialization error

Merge pull request #189 from project-sunbird/profileVisibility

Issues #SB-0000 fix: Unable to communicate to actor issue

tag for release-1.11 branch

Making tag for release-1.11 , Adding cassandra dependency jar

tag for release-1.10 branch

Adding cassandra migration jar.

tag for release-1.9 branch

Updating cassandra migration jar , old jar having some issues.
Ref: SB-7827