2 new features for session export view

Allow output to be pretty-formatted, ask for confirmation
before overwriting existing file
Fixed test for session:export:view, added CHANGELOG
Reenabled node copy from other ws test, as now fixed in jackalope
Merge pull request #36 from phpcr/session_export_improvements

2 new features for session export view
Added ability to import a file into the repository
Updated command
Updated changelog
Merge pull request #34 from phpcr/import_file

Added ability to import a file into the repository
iAdded --level option to list
Allow quoted arguments in aliases
Merge pull request #41 from phpcr/lstree

tree command, reimplementation of `doctrine:phpcr:node:dump` command
Merge pull request #37 from phpcr/aliases_quoted_args

Aliases do not resepect parenthesis escaping
Autocomplete, fixed segfault, include properties
Show template nodes / properties
Merge pull request #28 from phpcr/fixed_autocomplete

Improve auto-completion support
Node list show templates

- Behat tests
- Now must be enabled explicitly
Merge pull request #32 from phpcr/show_template

Option to show undefined proerties and children which are in the node type
Removed unneeded test stuff from box.json
Removed TableHelper clone keyword

- Replaced TableHelper with a factory
Added support for embedding the shell