Stop using getAnchor() with static targets

Stop using getAnchor() with static targets

Adjusted with search and replace:

    \{@?\$__wcf->getAnchor\(['"]([_a-zA-Z0-9-]+)['"]\)\}

to

    #$1

This method still is in use in various templates with dynamic names. This
locations has not yet been adjusted, because it needs to be checked whether it
may contains special characters that need to be escaped.

see #4580