lt-trim tests for group
lt-trim attempt at group element handling, not working yet
lt-trim group test had a space too much
wip
lt-trim: <g/> handling, copyWithTagsFirst

also merged:
lt-trim: createLoopbackSymbols should only include <tags> by default (esp. if we are to do <g>)
lt-trim group <g/> (#) handling working?
lt-trim group was missing a state-mapping, tests pass so far
lt-trim man page now says <g> works, minor fixes
Merge branch 'unpretransfer-group' into df-intersection