* collection functions
* fixed getUserCollections method
* reodered getCollectionProjects params to match other functions
* getUserCollections is safe against null params
* renamed body params in addProjectToCollection
* addProjectToCollection call was missing error string
* added withThumbnail param to getCollectionProjects, plus wrapped at 80 chars
* removed trailing slash from getCollectionProjects query
* added Cloud methods to set collection thumbnail and remove project from collection
* updated removeProjectFromCollection to match API
* add getCollectionMetadata method to cloud.js
* added methods to update collection name and description to cloud.js
* added method to remove a collection
* added methods to share, unshare, publish and unpublish collections
* renamed removeCollection to deleteCollection, to match deleteProject
* fixed which collection methods need credentials and which don't
* getUserCollection needs credentials
* added Cloud >> addEditorToCollection
* added Cloud >> removeEditorFromCollection
* added Cloud >> getCollectionsContainingProject
* reordered getRemixes params
* updated cloud module date