Alignment configuration table revamp and high level style changes.

[bagashe]

1. exploreAlignment & computeAllAlignments now have a description for each parameter. The description is pulled from boost::program_options::options_description, which is populated from the shasta config file.
2. We now use the actual config param name in the first column. This makes the table look quite similar to the [Align] section in the configuration file, thereby reducing the cognitive load of getting started with the HTTP server for debugging.
3. Redid the style sheet to
   • De-emphasize the table borders, so that viewer can focus on the data.
   • Created a style for input, so that the component looks the same on all pages.

[paoloczi]

Nice - thank you!