Complete refactoring, reformatting and general optimisations using go fmt, go vet and golint
Added models/value.go, containing the JSON structs for evepraisal/zKillboard requests
Removed crappy JSON interface-parsing for evepraisal/zKillboard requests
Changed database save query for fleets to pass "nil" instead of zero time
Adapted database query for available report fleets to only show fleets with an endtime
Added fetching of fleet role payment modifier to fleetdetails.html
Added GetMemberRole to fleet, returning the FleetRole of the given player
Added HasFleetRole to the template functions, allowing to check whether a player has the given fleet roles within a fleet
Moved check for accessMask/fleetRole from FleetEditHandler to respective sub-handlers to allow more fine-grained access control
Added access to the "Add profit" form for the fleet salvager
Removed "Add member" form for non-fleet commanders