Default values provided. First version.
Config fixed
Merge pull request #57 from AnaPana/master

Provided changes in config
auth section was removed
1. Added default values for meta_path, configs_path and master_port.
2. Updated errors in master view.
ValueError and IpAddressValidError exceptions were added
section_check and directives_check func were added to config_helper
1. Added default values(meta path, master port etc.) in config_helper module.
2. Added default backup path if it is not set in config.
3. Added creating of backup path if it is not exists.
1. Added stderr to remote_command function in transport module.\n2. Changed exceptions handling in data module.
1. Added exceptions for trash and data modules.\n2. Added opportunity to get data and trash paths from /etc/fstab or from config.3. Code refactoring was made.
functions for (port, backup_path, key existing) checking were added
functions for resolve and ping master_host checking were added
all check funcs were added to config_parser func
config_parser func was refactored
logging was added to config_helper's functions
ssh key existance func refactoring
backup folder existance func refactoring
backup folder will be create automatically if doesn't
default config path was added
addresses validation refactoring
moosefs_master availability check func refactoring
ssh key checker updated