Forces OCAtlassianInstance to be inmutable
Adds 'Instance.plist' on tests target
Adds and integrates OCJiraIssue
Cleans deprecated code
Migrated to use OCJiraIssue
Adds some documentation to OCJiraIssue
Removes OCAtlassianInstance and renames OCInstanceConnection to
OCConnectionManager.
Moves logic from OCAtlassianIntance to OCConnectionManager
Adds fields type and typeName to OCJiraIssue
Migrates logic and uses OCConnectionManager instead of OCAtlassianInstance
Removes duplications with issue's types and his names. Always uses names
from configuration file (Instance.plist)
Cleans unused code
Extends documentation on OCConnectionManager
Removes unused constants
Merge pull request #8 from vbergae/feature/refactor_and_prepare_for_exception_handling

Refactors and prepares for exception handling