* include/functions_db.php: Added database debug support. If the debug
flag in config is set, a table with all the queries done in a page is
shown. To do so, add_database_debug_trace() and print_database_debug()
were added.
* include/functions_ui.php: Added debug() function which shows a
given variable content and a traceback which can be toggled to make
developers life easier.
* index.php: Print database debug table.
* include/styles/pandora.css: Styles for debug functionallity.
git-svn-id: https://svn.code.sf.net/p/pandora/code/trunk@1483 c3f86ba8-e40f-0410-aaad-9ba5e7f4b01f
8130c5a1e1