removed redis and all system actions
Merge branch 'master' of https://github.com/adlnet/ADL_LRS into removelog
Merge pull request #157 from ljwolford/removelog

Removelog
updated error messages
added test case from amsterdam email
Merge pull request #158 from ljwolford/removelog

Removelog
using sets now in models instead of filter
updated queries
refactor req_dict
fixes
conflicts resolved
adding 500 back in
Merge pull request #159 from creighton/orgdict

Orgdict
updated act def
fixed langmaps and extensions relationships
made result onetoone field
Merge branch 'master' of https://github.com/adlnet/ADL_LRS into removelog
added field valdiation for stmts and subs
made name lang and desc lang inherit from languagemap
removed debugging line