Closes#1701.
* dolt/go/cmd/git-dolt/utils/find_git_config_dir*.go: Add util for finding git directory in parent directory structure
* dolt/bats/git-dolt.bats: Add test for git dolt install working in subdirectories of git repos
* dolt/go/cmd/git-dolt/commands/install.go: Find the .git directory even if it's in a parent of the working directory
* dolt/bats/git-dolt.bats: Fix indentation
* dolt/go/cmd/git-dolt/utils/find_git_config_dir.go: Omit extraneous type annotation like a good Gopher
* dolt/go/cmd/git-dolt: Use filesystem root instead of home directory as terminal path for .git search
* dolt/bats/git-dolt.bats: Unskip no-longer-hanging test
* dolt/go/cmd/git-dolt/utils/find_git_config_dir.go: Add method docs
* dolt/go/cmd/git-dolt/utils/find_git_config_dir_test.go: Create all test files in a temp directory
* dolt/go/cmd/git-dolt/utils/find_git_config_dir*.go: Return an error instead of hanging when currentPath is not a descendent of terminalPath
* dolt/go/cmd/git-dolt: Gofmt
* dolt/go/cmd/git-dolt/utils/find_git_config_dir.go: Actually, if these are always absolute paths, we can simplify things a bit
* dolt/go/cmd/git-dolt/config/config.go: Add package comment
* dolt/go/cmd/git-dolt: Factor CloneToRevision function out of Fetch command
* dolt/go/cmd/git-dolt: Factor AppendToFile out of Link command
* dolt/go/cmd/git-dolt: Add install command
* dolt/go/cmd/git-dolt-smudge: Create git-dolt-smudge command to use as a git smudge filter
* dolt/go/cmd/git-dolt/git-dolt.go: Cleanup
* dolt/bats/git-dolt.bats: Add bats test for git dolt install
* Jenkinsfile: Add git-dolt-smudge to dolt/bats stage
* dolt/bats/git-dolt.bats: Add test for git-dolt smudge filter
* dolt/bats/git-dolt.bats: Configure fake name and email in test git repos so that committing works on Jenkins
* dolt/{bats,go}: Improve git-dolt cloning behavior (especially streaming output from dolt clone); refactor
* dolt/{bats,go}: Small tweaks to git-dolt output
insecure parameter no longer supported. Changed bats test to use http:// instead
changed lastSegment to be more flexible and work with different remote formats
Quote the column names in SQL schema strings with backticks, so that our create table strings can actually be used to create tables even when the column names are reserved words or don't otherwise parse.
