gloss-transcription.js and gloss-witness.js onload() + initFragmentForm()

[thehabes]

The hash-id attribute has been added to the WitnessFragment forms. This had been undesired loading behavior, which has now been straightened out. There is still some debris to clean up.

In gloss-transcription.js and gloss-witness.js there are chunks of onload() that should be moved into initFragmentForm() that will make things less complex. There would be a strict separation between UI things to do with what the page was handed vs UI things to do after the page receives async info about what the page was handed.