On timeout, add button to search without relations

[danieldegroot2]

i.e. nwr["building"]["highway"="..."] (where ... some rare value)
returns timeout, because looking for relations would take too long.

i.e. nw["building"]["highway"="..."] (where ... some rare value)
returns results.

When user is given a timeout error, provide a button to allow the user to rebuild the query without relations (r).
Of course not every timeout error is caused by this mistake and it might be bad to add code for a minor user error.