Adding sessionDownloads
Merge canonical/master

Conflicts:
	coastal-hazards-portal/src/main/java/gov/usgs/cida/coastalhazards/download/DownloadManager.java
Modifications after weird merge.
Merge pull request #567 from isuftin/master

Bucket cards now sliding, some buttons wired up
Merge pull request #566 from jiwalker-usgs/master

Session download hooked up
Merge branch 'master' of https://github.com/USGS-CIDA/coastal-hazards
No longer creating buttons in javascript - they are now static in html and acted on in javascript.
Implement a workaround for an IE9 issue that causes strange resizing
Aggregation button now has a dropdown menu instead of a select list.

Child cards have functional buttons now 

Zoom to extent added