Metacat

added search gif used in default homepage

This is the merge from the branch WEB_UI_REDESIGN_BRANCH back into the head.
The only files that have been removed are those in lib/style/eml2; other files
that have been cvs removed (only from lib/ and lib/style) have been re-added
elsewhere (i.e. moved from one directory to another)....

superseded - now these elements are pulled in from the knb website

new include files for metacat web pages - header and search box. Still need to remove hard-coded context uris

Get rid of etral http:// in parties'url

Added a browse stylesheet that indexes data sets by keyword, creator, and
organization, all on one page. Use style=browse to access.

Some minor formatting improvements to keyword index, and change style
setting to style=keywords to access.

Added a new stylesheet and style-set that allows one to display all of the
keywords from a query on metacat in a sorted, unique list. Each keyword
is a link to a metacat query that returns all of the data packages that
reference that keyword. Use style=browse to invoke this stylesheet on a...

Fixed some bugs in these style sheets.

Fixed some bugs in these style sheets.

Make the tree sturcture display working.