String parameter checking

[DaveF63]

• **I'm submitting a ... **
  • bug report

Brief Description

When the changeset ID is copy-pasted it often includes a trailing white space & so fails to find the changeset. Could it perform a check for such erroneous characters?

What is the current behaviour, (attach relevant screenshots) ?

http://osmlab.github.io/changeset-map/#1234567%20

What is the expected behaviour ?

http://osmlab.github.io/changeset-map/#1234567