Merge pull request #2 from noels/master

Remove test.txt
Merge pull request #3 from noels/master

Data set request feature
add libraries and contrib modules and themes to .gitignore
move custom modules to 'custom' subdirectory
Merge pull request #4 from ratajczak/master

tiding up
Do not migrate any video or audio fields
Merge branch 'master' of github.com:datagovuk/dgu_d7