Bug #620: SEO metadata fix.

Added metadata for cleaner Search Engine link descriptions.
Issue #661 SEO: Add alt attributes to media tags

Added an alt tag with contentItem.Title to img links.
added api  support in UI tests

added new files
Merge pull request #666 from xanthics/master

 SEO fixes #620 & #661
Updated API ref docs.
Merge pull request #675 from willum070/docs

Updated API ref docs.
ToursApiDCR 2 verb PUT and automatic sequence id generation

ToursApiDCR code review rework

ToursApiDCR CR work from msu comments

ToursApiDCR make PutTours transactional

ToursApiDCR make PutTours transactional
Merge pull request #668 from charuch/ToursApiDCR

ToursApiDCR 2 verb PUT and automatic sequence id generation
added datacontract to entities
Merge pull request #670 from a-chumagin/master

add unit test spec to unit test project
Merge pull request #673 from a-chumagin/bibliography

Bibliography: Added API supporting for UI tests
Merge pull request #683 from a-chumagin/bibliography

added datacontract to entities