* remove ReplaceLeft

* remove GetRepositoryByOwnerAndName chainload to models.GetRepositoryByOwnerAndName

* remove CheckUnitUser chainload to models.CheckUnitUser

* remove MakeAssigneeList

* remove DownloadDiff & DownloadPatch -> DownloadDiffOrPatch

* remove GetRandomBytesAsBase64

* remove PushUpdateDeleteTags

* remove GetUserByKeyID
(you still can resolve user by "k, err := GetPublicKeyByID; userID := k.OwnerID")

* remove BasicAuthEncode from struct package -> same function in modules/base/tools !

* remove UserID from api.utils

* remove unused func from structs package

* paginate results

* fixed deadlock

* prevented breaking change

* updated swagger

* go fmt

* fixed find topic

* go mod tidy

* go mod vendor with go1.13.5

* fixed repo find topics

* fixed unit test

* added Limit method to Engine struct; use engine variable when provided; fixed gitignore

* use ItemsPerPage for default pagesize; fix GetWatchers, getOrgUsersByOrgID and GetStargazers; fix GetAllCommits headers; reverted some changed behaviors

* set Page value on Home route

* improved memory allocations

* fixed response headers

* removed logfiles

* fixed import order

* import order

* improved swagger

* added function to get models.ListOptions from context

* removed pagesize diff on unit test

* fixed imports

* removed unnecessary struct field

* fixed go fmt

* scoped PR

* code improvements

* code improvements

* go mod tidy

* fixed import order

* fixed commit statuses session

* fixed files headers

* fixed headers; added pagination for notifications

* go mod tidy

* go fmt

* removed Private from user search options; added setting.UI.IssuePagingNum as default valeu on repo's issues list

* Apply suggestions from code review

Co-Authored-By: 6543 <6543@obermui.de>
Co-Authored-By: zeripath <art27@cantab.net>

* fixed build error

* CI.restart()

* fixed merge conflicts resolve

* fixed conflicts resolve

* improved FindTrackedTimesOptions.ToOptions() method

* added backwards compatibility on ListReleases request; fixed issue tracked time ToSession

* fixed build error; fixed swagger template

* fixed swagger template

* fixed ListReleases backwards compatibility

* added page to user search route

Co-authored-by: techknowlogick <matti@mdranta.net>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: zeripath <art27@cantab.net>

(extend #9200)
 * add query param for GET functions (created Bevore & after)
 * add test
 * generalize func GetQueryBeforeSince

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

Don't require token when not necessary