initial import of stream2es wrappers

fixed typo

removed refactor leave behinds

missed push

cr comments

removing extra scheme part

fixed typo, clarified comment
Merge pull request #100 from edx/e0d/stream2es

E0d/stream2es
minor adjustments to index copying scripts
add migrate-index.sh for simplified reindexing.
Merge pull request #101 from edx/jsa/index-migration

add migrate-index.sh for simplified reindexing.
add create/update dates to comments index, for use in statistical facets
Merge pull request #102 from edx/jsa/index-comments-dates

add create/update dates to comments index, for use in statistical facets
Return total result count for text search queries