Add presenters for each sub-tab in curves tab

qt/python/mantidqt/utils/__init__.py

qt/python/mantidqt/widgets/plotconfigdialog/__init__.py

...idqt/widgets/plotconfigdialog/curvestabwidget/__init__.py

...nfigdialog/curvestabwidget/errorbarstabwidget/__init__.py

...figdialog/curvestabwidget/errorbarstabwidget/presenter.py

...idget/errorbarstabwidget/test/test_errorbarsproperties.py

...otconfigdialog/curvestabwidget/errorbarstabwidget/view.py

...lotconfigdialog/curvestabwidget/linetabwidget/__init__.py

...otconfigdialog/curvestabwidget/linetabwidget/presenter.py

...tconfigdialog/curvestabwidget/markertabwidget/__init__.py

...configdialog/curvestabwidget/markertabwidget/presenter.py

...dqt/widgets/plotconfigdialog/curvestabwidget/presenter.py

...mantidqt/widgets/plotconfigdialog/curvestabwidget/view.py

qt/python/mantidqt/widgets/plotconfigdialog/presenter.py