Ignore eclipse files in eclipse sub-projects
Add BaseInteractionScreen to help create screens with less plumbing.
Merge PR #1306 by @Josharias - utility interaction UI class
add apply button to PreviewWorldScreen #1231
replace *-import
Fixing some checkstyle issues.
Merge PR #1277 by @msteiger - eclipse tweak
Merge #1308 by @meniku - apply button for world preview - fixes #1231
Fixed checkstyle errors in DynPrioQueue
Merge pull request #1313 from msteiger/dynprioqueue_cleaned

Fixed checkstyle errors in DynPrioQueue
allow to cancel world preview
add error label
ensure that only valid colors are generated
add progress percent to wait popup
Merge PR #1314 by @meniku - preview cancel option
Update readme - F1 clarification, two new modules, new contributor
Adding ImmutableBlockLocation for other classes to use, for example as a key in maps.
Merge remote-tracking branch 'upstream/develop' into develop

Conflicts:
	engine/src/main/java/org/terasology/utilities/concurrency/DynamicPriorityBlockingQueue.java
Merge pull request #1320 from MarcinSc/develop

Adding ImmutableBlockLocation for other classes to use, for example as a key in maps
Merge remote-tracking branch 'upstream/develop' into develop