aliases for data sets

[egonw]

Just like git has aliases (e.g. tags and branch names) for commit hashes, I like to see aliases for data sets, so that I can have something like:

http://apps.ideaconsult.net:8080/ambit2/dataset/wikipathways

which redirects today to:

http://apps.ideaconsult.net:8080/ambit2/dataset/1945542

but in the future refer to another data set, e.g.:

http://apps.ideaconsult.net:8080/ambit2/dataset/15567883456