Modify view 'projects#show' for user readability

app/views/projects/_progress_list.html.erb
- Alter to use <h2> for t("helpers.page_title.progresses.index").
app/views/projects/_project.html.erb
- Modify to use HTML class of "table_base" and <th>'s.
public/stylesheets/style.css
- Enlarge fonts in table <td> and shrink links in 'span.actions'.
Backup DB development