Generalised row strategy to base strategy
Added arbitrary order strategy
refs #850
Fixed arbitrary order strategy declaration
Changed scanning-order type to string
refs #850
Changed strategy in main group in symboler
refs #850
Added naming pager's page (based on its id)
refs #850
Added page to scanning order
refs #850
Extended widgets documentstion
refs #865
Added style information to ProgressBar
refs #865
Added docs to Header widgets
refs #865
Added docs to BackgroundImage
refs #865
Added docs to BackgroundPatter
Changed visibility of drawing handler
refs #865
Added docs to Button widget
Finished docs in pisak.widgets
refs #865
Fixed param listing by adding newlines
refs #865
Change links' type in app_dev_guide
refs #867
Added switch_and_groups
refs #867
Added signal_handlers
refs #867
Adde module references
refs #867
Params docs in correct form in speller widgets
refs #864
Renamed widgets_to usefule_widgets
Added descriptions to widgets
refs #867
Reorganised toctree
refs #867
additional doc extension:
fix pisak.symboler.rst
change theme
add logo
change chapter styling
change author order
add paint module
refs #867