FIXES #1268

 - Move layouting code into the .ui file
 - Reduce margins hugely -- atop the title block, around the
   scroll area, etc -- so that more license is visible at once.

 - split shared <h1> message off
 - do some string-concatenation, but only of whole sentences
 - shave off some vertical space by dropping the mainsubtext item

 - Kevin Kofler pointed out there was a redundant else-if
 - Only use size for comparison if it's valid

housekeeping - logging for CreateUser Job

 - stray ;
 - clang-tidy had re-ordered the moc-warnings.h header, needs to go
   **before** the .moc so split into its own group

 - The boost headers fall foul of tons of Clang warnings, so introduce
   a mechanism like moc-headers for turning off most of those warnings.

 - the empty config file would fail in tests
 - move the documentation part of it to CMakeLists.txt

 - In code, add the necessary bool
 - document meaning in the config file
 - actually expand the full text if the entry is local and set to expanding-
   by-default. This implementation is a bit lazy since it just pretends
   to click on the toggle button.
 - While here, reduce scope for UB by initializing POD members

 - The arrows Up, Down, Right are used on toolbuttons, but
   in the context of this module, those are directions with
   meaning; give them better names.
 - Because of #1268, the meaning of up- and down- may be swapped;
   I'm not sure of which look makes the most sense. This is prep-
   work for easily swapping the looks by using the meaningful names
   instead.

SEE #1268

 - we loop over all the entries anyway, so calculate allLicensesOptional
   along the way (debatable whether std::none_of is clearer)
 - always un-check the accept-box when resetting entries.