PhpWiki 1.5.4 released

This is a bug-fix and enhancement release.

• Fix WantedPages for Fusionforge
• Remove WantedPagesOld (use WantedPages instead)
• Add WebM format in Video plugin
• Update jscalendar to 1.0
• Remove Width and Height preferences modification in Edit Toolbar
• New icons in Edit Toolbar
• Make static templates in Edit Toolbar work
• Fix memory_limit for WIKI_SOAP
• Remove MockRequest
• Update jquery to 1.11.3