Integrate TAP into new Web Frontend

[henryk86]

Add support for the new TAP feature.

[henryk86]

Necessary features:

• Create TAP
• Edit TAP
• Delete TAP

Create / Edit TAP

• add new audio files (tafs, mp3, ...) --> upload + url?
• add existing audio files --> select
• add other TAPs? (Merge TAP) --> select
• remove entries
• reorder entries

[henryk86]

• page added (filebrowser showing TAPs, show tap file content)
• add, edit and copy functionality still open