Updated Portuguese translation
Updated Spanish translation
Updated Russian translation
Made the actions in the Objects dock update to language change
Added manpages and desktop file
Updated French translation
Fixed Mac build on Qt 5

Due to missing headers in macsupport.mm.
Fixed spaces in debug message
Added a note about installing qt on Mac.
Updated Japanese translation
Initialize some members in the constructor

Makes cppcheck happier, and is a good idea anyway.
Updated Chinese translation
Removed debug output from the staggered renderer
Updated Brazilian Portuguese translation
Updated Hebrew translation
Update Czech translation
Added Transifex configuration
Fixed possible crash in TileDelegate

This crash is not possible to trigger when using the UI to add tilesets,
but by editing the map or tileset file you can set up tilesets that
have a tile count that is not divisible by the column count. The
TileDelegate was not dealing correctly with table cells for which no tile
exists.
Removed ability to change terrain through the TilesetModel

It is no longer used and would not handle undo correctly.
Remember the size and position for some dialogs

Some dialogs were excluded from this behavior because they were either
not resizable or because it's probably better for them to always pop up
in the center (like Preferences, New Map and New Tileset).

Unfortunately for some window managers this behavior is broken and I
don't know of a good way to fix that. On Xfce for example, the dialogs
will move down by the height of their title bar each time they are
opened.

Closes #339