Missing infos on tools creation

(this is a reminder for Nathan or myself...)

The documentation is lacking some infos on tools properties :

1) the "Creating Tools" page should explain the "configure"/"setXXX" mechanism

2) the "Web Framework Integration" (which should maybe be named "J2EE Integration" to avoid the ambiguous framework word) should list all standard properties that are set for every scope (setRequest,setVelocityContext...).

(...and " grep TODO docs/* "...)