messages: moved legacy files and mail utils
comments: stops toggle event propagation

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
comments: JavaScript moved to static

* Moved JavaScript to toggle comments in separate static file;
* jslint on aforementioned JS.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
comments: css move

* Moved CSS to static;
* Disabled href for toggler.

Signed-off-by: Adrian-Tudor Panescu <adrian.tudor.panescu@cern.ch>
workflows: fix broken import
Merge remote-tracking branch 'adrianp-github/cswwd' into code-structure-with-webdeposit
BibField -> legacy.bibfield

* regression tests are not updated