ISIS-537: updating icons for todoapp.
ISIS-537: suppress 'mandatory' indicator in tables (when the label is empty)
ISIS-537: don't wrap every property in entity property form in 'panel-body', instead just one div for the whole set; remove accidental double panel-default for middle column; added override CSS to space out a little bit.
ISIS-537: moved the 'about' link to footer, and moved the 'logout' link into a dropdown.
ISIS-537: removed border from either end of table; added table-hover style;
ISIS-537: using h4 for title/icon rather than panel; flowing actions after title.
ISIS-537: making the menu service actions be closer together.
ISIS-930: support for font awesome icons on (most) action buttons.  Includes @CssClassFa and also support in the .layout.json file.
ISIS-537: don't display sortable icons for toggle and title columns in tables.