Made ternary map work again.
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Merge pull request #208 from SirVer/ternary_map

Made ternary map work again.
Increases maximum distance zoom distance by 10x.
Fixes comments about zoom constants.
Decreases the maximum texture size.
This improves memory usage when displaying OccupancyGrid messages.
Merge pull request #210 from damonkohler/work2

Increases maximum distance zoom distance by 10x.
Merge pull request #211 from damonkohler/work3

Decreases the maximum texture size.
Fixes broken map clearing.
Merge pull request #214 from damonkohler/clear_tiles

Fixes broken map clearing.
Disables lint checks.
Adds *~ and *.swp files to .gitignore.
Upgrades Android plugin version.
Merge pull request #215 from pedrolf/master

Upgrades Android plugin version.
Refactored android_core so RosActivity can be used as a component, allowing the use of fragments among other things.
Merge pull request #216 from pedrolf/rosactivity_foo

Refactored android_core so RosActivity can be used as a component.
Cleans up code and removes unneeded method in RosActivityComponent
Adapts NodeMainExecutorService to work with the non-blocking changes to DefaultNodeMainExecutor.
Allows the client of RosActivityComponent to set their own notification for NodeMainExecutorService.
Merge pull request #217 from pedrolf/master

Adds flexibility to NodeMainExecutorService notification.
Adds grayscale to occupancy grid layer.
Merge pull request #218 from pedrolf/master

Draw occupancy grid layer in grayscale instead of three colors.
Gives the user the ability to find out whether the service is being shutdown in order to avoid executing nodes after calling shutdown on it.
Merge pull request #219 from pedrolf/master

Gives the user the ability to find out whether the service is being shut...