* Initial commit for issue 763. Added y scale to camera. refs #763
Merge branch 'master' into issue_763
 * Removed special rounding and overdraw code from LayerCache and CellRenderer. refs #763
 * Corrected map files. Zoom and cell height should now be properly.
 * Fixed hopefully point and line drawing. The transparent (missing) lines in the settings menu are now displayed correctly. refs #704
 * Changed the texture coordinates for filtered subimages. Texture filtering results are so a bit better. refs #763
 * Fixed gaps in rio de hola. The ground tiles have the wrong size, therefore I have adjusted the tilt value.
Merge pull request #806 from fifengine/issue_763

Fix issue #763