SettingsDialog: move dialog size into markup template
Dialog to display map's viewport settings
- ViewportDialog view and markup template
- "Viewport..." button to open the dialog, temporarily placed in settings section
- added click handler to MapView, that creates the viewport dialog
Define a constructor for viewport objects
- new type "Viewport" containing map center and zoom level
- manage viewport by center/zoom instead of bounds rect to better work with varying app window sizes
Process input text from text field
- Viewport has a parsing function to extract its center point coordinate and zoom value using a regular expression
Auto-select viewport data when input control is focussed
Display tip to encourage copy/paste
Move Viewport Settings button onto the map (lower left corner)
Custom image for Viewport Settings button
Merge pull request #10 from thomasstache/viewport-dialog

Viewport settings dialog