Workaround to stay compliant to XHTML strict.

refs #206
Added copyright and license notice to inc/wiki_help.inc.php.
(1) Added ND2 to the database.
(2) Increased database revision to 12.
(3) Adapted database script to (hopefully) show a neat layout from revision 11 onwards.
(4) Fixed an issue that replicated the CZI entry, also when the database update did not succeed.
(1) The ND2 format is now completely functional in HRM. Done.
(2) Increased version numbers for minimum required HuCore (4.5.1p0) and for current HRM (3.0.4).
Tidier layout of the database update script so that we can follow the database entries more easily.
Added functions to deal with STED and STED 3X datasets:
The database is already properly updated and the UI shows the microscope type accordingly. The STED deconvolution jobs are not yet functional. Work in progress.
Small style changes:
- Lighter blue color for the header and footer.
- Grey color for the title.
- Removed verification links.
Added the new STED and STED 3D microscopes to the systems that must display an entry for the backprojected pinhole radius.
Fix spacing issue introduced with new navbar style.

Webkit-based browsers did not have a margin between the rightmost entry
in the navbar and the border as they interpret the CSS different from
e.g. Mozilla.

refs #206
Make selection lists resizable.

fixes #151
Add "resize" to IE-CSS and hope for future improvements.

refs #151
Added missing developer names and email addresses in the footer and reorganized a bit the footer.inc.php page.
Increased version number to 3.1.0.
Allow to use custom path for PHP binary used for the QM.

fixes #201
Added AJAX methods that allow to retrieve image parameters as JSON objects to be used on the client side. Parameters can be either obtained from current session (i.e. current values as set by the user) or as freshly instantiated parameters. Moreover, either a specific parameter can be obtained (by name), or the whole set. The base Parameter class now has a method that allows any Parameter to be serialized to a JSON object.
(1) Added STED parameters to the 'possible-values' table.
(2) A cherry-pick from the 'imgParams' branch would have been better.
Added STED parameters to the 'confidence_levels' table.
Let the Queue Manager parse the STED parameters to store them into the confidence levels table.
(1) Added a new STED step in the image parameters editor.
(2) Added STED microscope types.
(3) Added STED depletion mode as first STED parameter.
(4) Corrected the database update script.
(5) Work on STED parameters still in progress.
(1) Added the corresponding parameter class for the STED saturation factor.
(2) Added the STED saturation factor to the UI in the image parameter editor.