Fixed undefined error in acp_portal.php caused by old code;
Fixed undefined error in portal.php if Portal is accessed after it has been uninstalled -- now it redirects to Index;
Fixed how color palette gets displayed and also fixed the small button areas of the color palette;
When adding a Module, the users now see the Module name rather than the file name;
Removed unneeded language variables from language files;
Finished global announcements block (basic function);
Added missing includes in portal.php;
Added missing handling of top and bottom column;
Added unset of $template_module in portal.php in order to prevent incorrect block names;
Added correct title for page_header and language string for Portal link;
