* Pull request options migration and UI in settings
* Add ignore whitespace functionality
* Fix settings if pull requests are disabled
* Fix migration transaction
* Merge with Rebase functionality
* UI changes and related functionality for pull request merging button
* Implement squash functionality
* Fix rebase merging
* Fix pull request merge tests
* Add squash and rebase tests
* Fix API method to reuse default message functions
* Some refactoring and small fixes
* Remove more hardcoded values from tests
* Remove unneeded check from API method
* Fix variable name and comment typo
* Fix reset commit count after PR merge
* refactor struct's time to remove unnecessary memory usage
* use AsTimePtr simple code
* fix tests
* fix time compare
* fix template on gpg
* use AddDuration instead of Add
This change corrects a few logging issues:
* Standardized formatting errors with '%v'.
* Standardized failure warning word usage.
* Corrected an instance of using the standard log library when
the gitea log library should be used instead.
* Add a process.Manager singleton with process.GetManager()
* Use process.GetManager everywhere
* Fix godoc comments for process module
* Increment process counter id after locking the mutex
* Speed up conflict checking in pull request creation
In order to check conflicts of a PR, we set up a working tree by
cloning the base branch, which is quite time-consuming when the repository is huge.
Instead, this PR uses `git read-tree` and `git apply --check --cached` to check conflicts.
For #258
* Use $GIT_INDEX_FILE instead of --index-output to avoid lockfile problem
The lockfile gets renamed to the final destination after the operation
finishes. But it must be located in the same filesystem, which prevents
us from using /tmp.
* Temporary file names should not prefixed with '-'