isis

- in order to ease domain code migration (from 1.x to 2.x)

- also providing more precise specifications with associated java-doc

- we have still failing services, those that contribute to menus

- if no package prefixes configured export all instead of none

- ConcurrentTaskList (internal API) hopefully provides a simpler and

more flexible solution to concurrent task execution

in case there are multiple configurations to pick from when

bootstrapping with Spring, picking one configuration class works just

fine if the other are not auto-discovered by Spring's package scanning;

so the solution is to move any Spring configuration beans out of the

scanned package hierarchy

this commit does this for 'smoketests' and 'simpleapp' by moving the

config beans into xxx.conf packages that are out of scanning scope

- when using the 'wrapper', the desired execution mode can now be

controlled finer by combining ExectionMode options to an EnumSet, where

now any possible combination is available to the user

- also added a new ASYNC mode Option do be implemented later; idea is to

allow for background execution via the WrapperFactory

- executeWithinTransaction(task) now reuses any existing tx boundary

- executeWithinNewTransaction(task) forces creation of a new tx boundary

JDO does not support transaction nesting, so we reuse tx boundaries by

default. This should allow for better tx rollback support.

- several principal and related objects have been improved to procude

less stress on the heap

- smoketests added that also test for the absence of a HttpSession when

using basic-auth strategy against a rest endpoint

- also moves the new restclient introduced with v2 from applib to a new

extension module 'restclient'

- improvements to the restclient to also handle scalar value types

- Add missing '@Override' annotations

- Correct indentation

- Add file header (JAutodoc)

- instead let the IsisTransactionAspectSupport allow for task

synchronization on transactions

- fixes the basic BackgroundService smoke-test

- however, action-domain-events are not yet triggered when invoking via

BackgroundService

- opening an isis session does no longer open a transactional context

- removes references to TransactionService.nextTransaction* from the

Fixtures Extension

- also removes 'm' (=mixin) shortcut from FactoryService interface