Plugin: Refactor ListConflictFiles into more submethods
Plugin: Add MIT License
Plugin: Major refactoring - Move a lot of functionality into own submodules

 - conflict_re
   Contains the regular expressions which are used to find conflicts in files

 - git_mixin
   Contains the GitMixin class which in turn contains useful functions to
   easily handle the detection of git repositories and execute git commands

 - messages
   Contains all messages the plugin displays

 - settings
   Contains the logic to read the user settings and provides default values

 - util
   Contains everything else which is useful but didn't fit into a more
   specific module (atm it only contains "execute_command", a function
   which eases the work with the python subprocess module)
Plugin: Disable the search for a conflict on opening a view

Atm "show_at_centre" doesn't work properly on newly opened views and
provides inconsistent results.
Due to this I disable the feature until I'm able to find a workaround
or the bug gets fixed.

See Sublime Text issues for more information.
Docu: Add message for 1.4.7