auth: prepare code for removal of pylons request in pyramid migration.

auth: use pyramid only redirections.

events: re-organizate events handling. - pass in request from event to url functions to skip request lookup - added some logging - prepared for pyramid migration

events: expose permalink urls for different set of object. - permalink url should provide a non-changeable url that can be used in external sources with guarantee of beeing always valid.

review-rules: extend code to support the forbid commit authors.

pull-requests: expose author in creation view to be consistent with show view.

repo-summary: re-implemented summary view as pyramid. - changed exception handler, to now work in pure pyramid mode - changed missing requirements logic on repo based views that require vcs-connection

docs: updated info about client usage.

navigation: remove # from url in options navigation entry. - leaving '#' in url is not good behaviour, and menulink class prevents the click anyway.

pyramid: removed pylons reference from apps. - this can be completly removed from those views as they are pyramid only.