* Set session and indexers' data files rel to AppDataPath
The setting AppDataPath is now relative to the working directory.
The session svc's PROVIDER_CONFIG now defaults to AppDataPath/data/sessions.
The issue indexer's IssuePath now defaults to AppDataPath/indexers/issues.bleves.
* fix bug
* add units to team
* fix lint
* finish team setting backend
* finished permission controll on routes
* fix import blank line
* add unit check on ssh/http pull and push and fix test failed
* fix fixtures data
* remove unused code
* add internal routes for ssh hook comands
* fix lint
* add comment on why package named private not internal but the route name is internal
* add comment above package private why package named private not internal but the route name is internal
* remove exp time on internal access
* move routes from /internal to /api/internal
* add comment and defer on UpdatePublicKeyUpdated
* move all push update to git hook post-receive and protected branch check to git hook pre-receive
* add SSH_ORIGINAL_COMMAND check back
* remove all unused codes
* fix the import
