[BUGFIX] Local git repositories get no results
[CLEANUP] Removed unnecessary imports

In the source code there are many unused imports.
This commit removes them for a cleaner code base.
[BUGFIX] #9 - Error message wrongly raised: "Invalid extension Weeks"
Resolve extension dependencies recursivly
Added Metrics extension as dependency
Raised word column to 150 and added sql commit
If first commit is in a tag we don't have branch yet
Merge pull request #38 from andygrunwald/extension-message-words-commit

Make extension MessageWords working again
Merge pull request #28 from andygrunwald/invalid-extension-weeks

[BUGFIX] #9 - Error message wrongly raised: "Invalid extension Weeks"
[FEATURE] Add option to list all available extensions
Fixed "KeyError: '__init__'" in extension list command
Merge pull request #27 from andygrunwald/help-list-extensions

[FEATURE] Add option to list all available extensions
Added recurslivly execution of dependencies
Added MessageWords as a dependency for MessageWordsPrint
Fix typo in week extension
Fix parameter typo in Months extension
Merge pull request #36 from andygrunwald/resolve-extension-dependencies

Resolve extension dependencies recursivly
Merge pull request #37 from andygrunwald/metrics-evo-dependency

Added Metrics extension as dependency in MetricsEvo extension
Merge pull request #43 from andygrunwald/message-words-print-dependency

Added MessageWords as a dependency for MessageWordsPrint
Fixed typo in quiet / quit option in sample config file