Two methods used the global variable p instead of declaring a local variable p.
This caused the function p (that constructs HTML <p> elements) in support.js
to suddenly be redefined as a number.
The minibar is now displayed inside the editor, intead of on a separate page.
This makes the context clearer and makes it more obiovous how to return to the
editor.
The grammar that the user is currently working is now the one shown initially
in minibar, instead of the first grammar in alphabetical order.
Also GFServer.hs now removes absolute paths to the grammar files on the server in error messages from GF returned to to gfse.
"gf -server" mode now contains everything needed to run the minibar and
the grammar editor (including example-based grammar writing).
The Setup.hs script installs the required files where gf -server can find them.
These files have been moved to a new directory: src/www.
The separate server program pgf-http is now obsolete.
