Without this change the cache is on a process scope. If running with multiple
threads this leads to sharing the cached object between threads. This will cause
exceptions if multiple threads are trying to access the same curl object.
Even worse it allows multiple threads to operate on the same repository object
concurrently.
* added db migration for integration table, version 55
* added integrations views/templates/models
* added slack integration
* added h.url.current() support for pyramid only contexts
* added issues extractor for commit messages
* renamed repo-deleted/repo-created to repo-delete/repo-create
* removed marshmallow
* added serialization for events to static dicts of data
* added lazy_ugettext for translation of start time string
This addresses issues from #4036
- we use a backward compatible cipher that can implement HMAC signature
- with HMAC signature we can detected mangled data or wrong secret key
- this allows more explicit errors than UnicodeDecode errors
- added a new .ini values that controls strict mode
