Table Setting, hide alignment for Header font setting

- Alignment for Header font setting is conflicting with the use of Column Selector component and defining alignment on a per column basis, thus removing it.
Merge pull request #167 from stulees/chore/table-setting-alignment

Table Setting, hide alignment for Header font setting
[Fix] Widget Button Toolbar, consistent icon size/spacing

- Ensuring `fa-lg` class being used on all icons for consistent sizing (and vertical centering)
- Adding `icon-right` to Contribute button for consistent left-margin with the other button icons
Merge pull request #168 from stulees/bug/widget-button-toolbar-icons

[Fix] Widget Button Toolbar, consistent icon size/spacing