* Update eslint config
* Applied linter to lib
* Applied eslint config to CliClient/app
* Removed prettier due to https://github.com/prettier/prettier/pull/4765
* First pass on test units
* Applied linter config to test units
* Applied eslint config to clipper
* Applied to plugin dir
* Applied to root of ElectronClient
* Applied on RN root
* Applied on CLI root
* Applied on Clipper root
* Applied config to tools
* test hook
* test hook
* test hook
* Added pre-commit hook
* Applied rule no-trailing-spaces
* Make sure root packages are installed when installing sub-dir
* Added doc
* enable drag and drop fileURLs
* fix windows fileURL syntax
* introduce encodeURI function
* fixed encoding issue
* use path-utils.js to deal with fileURL path conversion
* add changes as requested
* Minor rewording 'On the' -> 'In the', additional info about attaching files
* change call of toFileProtocolPath
* enable test script to check syntax for all OS-platforms
