Add contract view in character and fix assigneeID missing in character and corporation contracts DB. Fix the miss loops for querying the item in contracts for corp ans character
Add few comment on view
Add a helper function generateEveImage(id, size) to check if ID is char/corp/ally. Fix the nullable filed in eveapi/character/characterContracts. Same on corporation. Improve contract view
Merge pull request #37 from Cripsii/add_contract

Add contract view for character