Improved gitignore file

Excludes komodo and netbeans project files and composer (installer) files.
Merge pull request #3 from tersmitten/improved-gitignore-file

Improved gitignore file
Normalized indenting and fixed phpcs errors
Added default translation for English
Added extra Dutch format (for Dutch Excel) to csv export
Removed unused actions and views
Added missing helper
Removed empty hasAndBelongsToMany associations
Updated docblock
Removed unused code
Normalized indenting and fixed phpcs errors