Portability enhancements + DBUtil enhancements
Do not register hooks and eventhandlers twice, closes #727, closes #484.
Merge pull request #1080 from cmfcmf/logutil-fix

Do not delete messages if $delete = false.
Merge pull request #1078 from cmfcmf/#727#484

Do not register hooks and eventhandlers twice, closes #727, closes #484.
Andreas08 search field fix, closes #1075.
Merge pull request #1082 from phaidon/andreas08-searchfield-height-fix

Andreas08 search field fix, closes #1075.
Bootstrap btn fix.
Remove old toolbar now we have WebprofilerBundle
Merge pull request #1083 from phaidon/btn-fix

Bootstrap btn fix.
Update CONTRIBUTING.md
Introduced debug toolbar.
Added first draft of a CoreBundle DataCollector.
Merge pull request #1081 from cmfcmf/toolbar

Introduced debug toolbar.
Merge pull request #1084 from zikula/remove_toolbar

Remove old toolbar now we have WebprofilerBundle
Remove unused config vars
Allow configuration of minimum target version for compat layer
Merge pull request #1072 from zikula/legacy_version

Allow dynamic legacy flag.
Remove unused deprecated files refs #1085
Remove support for old smarty delimiters
Adjustment for removed (unused) files