Added documentation for ACT-1572.

Added documentation of the new options on the Runtime annotation. There
have been changes to the way the runtime characteristics are specified.
Also, new options have been added to support expression and
delegateExpression, based on Michael Priess' work in the pull request
https://github.com/Activiti/Activiti-Designer/pull/5.
Merge pull request #46 from balsarori/master

Fix #45 - Activating/Suspending processDef throws Exception
Merged with Dimitry's repo
Merge branch 'master' of https://github.com/Activiti/Activiti
Moved to version 5.12
i18n zh-CN for explorer 5.12
release notes 5.12
Merge pull request #48 from henryyan/master

i18n zh-CN for explorer 5.12
ACT-1593: support for multiple charts in same report
ACT-1593: added support for disabling report data generation
ACT-1593: try to fix running on tomcat (not yet working) + tweak to help desk report
Merge branch 'master' of github.com:Activiti/Activiti
Pull back native query paging due to mssql and db2 errors on qa
Merge branch 'master' of https://github.com/Activiti/Activiti
Explorer Tomcat fix
Post 5.12 fix
Updated outdated screenshots
ACT-1593: final bits and pieces before the big release. Docs + final tweaks.
Merge branch 'master' of github.com:Activiti/Activiti
ACT-1593: specially for Tijs.