Remove data-action attribute in buttonEnabler
Remove data-action attribute in buttonEnabler

fixes #701 on github.

The 'Add Tree' anchor tags use a 'data-action' tag to enable the add tree mode. The button enabler removes this action in the case of disabling or redirecting, in order to prevent this behavior from leaking through.

recklessromeo/otm-core,recklessromeo/otm-core,maurizi/otm-core,maurizi/otm-core,recklessromeo/otm-core,RickMohr/otm-core,RickMohr/otm-core,maurizi/otm-core,clever-crow-consulting/otm-core,RickMohr/otm-core,clever-crow-consulting/otm-core,clever-crow-consulting/otm-core,recklessromeo/otm-core,RickMohr/otm-core,maurizi/otm-core,clever-crow-consulting/otm-core