Merge pull request #21 from chandrasekharv/release-6.2

Hiding TEKS standards library for logged out users implemented
"[Search - OER] We should have a resource filter for OER resources"
Added new arrow image for Primary and secondary information toggle feature.
UI design integrated for the new Collection Edit metadata fields
UI design integrated for the new Collection Edit metadata fields - Toggle Arrow image handled, on different scenarios to navigate back and forth.
Teacher Tip Functionality added under Share tab
Merge pull request #22 from mitraj/release-6.2

"[Search - OER] We should have a resource filter for OER resources"
Merge pull request #23 from ssushma/release-6.2

UI design integrated for the new collection info meta data fields.
Display question count for each collection in the collection-search results