add playground column to copr table
add /playground/list/ api call

this list all projects which are included in playground fedora repo
adding HACKING

mostly notes for myself for stuff which is run very rarely
and I tend to forgot it
validate chroots in POST requests with API
Automatic commit of package [copr-frontend] release [1.31-1].
1077791 - remove make as BR

it is always presented in build root
1077791 - add LICENSE to -doc subpackage
1077791 - set perm of cronfile to 755

there is nothing secret in that file
Automatic commit of package [copr-backend] release [1.31-1].
include ec2rc in service unit file
Automatic commit of package [copr-cli] release [1.31-1].
Automatic commit of package [copr-backend] release [1.32-1].
be less strict in parsing fas/copr-name

and allow dash and other characters which are not part of \w
Automatic commit of package [copr-cli] release [1.32-1].
send permissions request to admin not to requestee
Automatic commit of package [copr-frontend] release [1.32-1].
stop building for el5 and start building for el7
better explain additional yum repos
check if chroot exist for specified project

addressing:
Exception on /api/coprs/hhorak/mysql55-test1/detail/fedora-20-x86_64/ [GET]
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1360, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/usr/share/copr/coprs_frontend/coprs/views/api_ns/api_general.py", line 414, in copr_chroot_details
    output = {'output': 'ok', 'buildroot_pkgs': ch.buildroot_pkgs}
AttributeError: 'NoneType' object has no attribute 'buildroot_pkgs'
better count workers

if you start N workers and first one dies, then you another one is started as replacement,
but we label it as worker-N again.