* Allow compare page to look up base, head, own-fork, forkbase-of-head

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per @guillep2k

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update routers/repo/compare.go

* as per @guillep2k

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Rationalise the names a little

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Rationalise the names a little (2)

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Fix 500 with fork of fork

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Prevent 500 on compare different trees

Signed-off-by: Andrew Thornton <art27@cantab.net>

* dotdotdot is perfectly valid in both usernames and repo names

Signed-off-by: Andrew Thornton <art27@cantab.net>

* ensure we can set the head and base repos too

Signed-off-by: Andrew Thornton <art27@cantab.net>

* ensure we can set the head and base repos too (2)

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix lint

Signed-off-by: Andrew Thornton <art27@cantab.net>

* only set headRepo == baseRepo if isSameRepo

Signed-off-by: Andrew Thornton <art27@cantab.net>

Fix #5997.

If a push causes the patch/diff of a PR towards target branch to change, all existing reviews for the PR will be set and shown as stale.
New branch protection option to dismiss stale approvals are added.
To show that a review is not based on the latest PR changes, an hourglass is shown

* Save patches to temporary files

* Remove SavePatch and generate patches on the fly

* Use ioutil.TempDir

* fixup! Use ioutil.TempDir

* fixup! fixup! Use ioutil.TempDir

* RemoveAll LocalCopyPath() in initIntergrationTest

* Default to status checking on PR creation

* Remove unnecessary set to StatusChecking

* Protect against unable to load repo

* Handle conflicts

* Restore original conflict setting

* In TestPullRequests update status to StatusChecking before running TestPatch

Which would unnecessarily slow down the pull compare operation.

* Be more strict with git arguments
* fix-up commit test
* use bindings for branch name

* Supports tags when comparing commits or branches

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Hide headline when only comparing and don't load unused data

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Merges compare logics to allow comparing branches, commits and tags with eachother

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Display branch or tag instead of commit when used for comparing

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Show pull request form after click on button

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Transfers relevant pull.go changes from master to compare.go

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Fixes error when comparing forks against a commit or tag

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Removes console.log from JavaScript file

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Show icon next to commit reference when comparing branch or tag

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Updates css file

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Fixes import order

* Renames template variable

* Update routers/repo/compare.go

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

* Update from master

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Allow short-shas in compare

* Renames prInfo to compareInfo

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Check PR permissions only if compare is pull request

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Adjusts comment

Signed-off-by: Mario Lubenka <mario.lubenka@googlemail.com>

* Use compareInfo instead of prInfo