[TASK] Upgrade travis builds
[TASK] Pick corresponding Flux stability branch
[TASK] Change URL of Introduction and phpunit in Travis script
[TASK] Remove 6.0 testing from build file
[BUGFIX] Fix path resolution

Fixes path resolution when both TS and register method are used.

This patch is a backport from development. Re-merging, this may cause troubles.
Merge pull request #142 from cedricziel/pathFix

[BUGFIX] Fix path resolution
[TASK] Set version in composer.json
[BUGFIX] Switch to new colPos value
Merge pull request #149 from bjo3rnf/lostnumbers

[BUGFIX] Switch to new colPos value
[TASK] Set TYPO3 version dependency
[TER] 2.1.1
Merge pull request #150 from FluidTYPO3/development

[TASK] Prepare 3.0.0
[TASK] Fix broken build script
Merge branch 'refs/heads/staging'

Conflicts:
	.travis.yml
	Build/ImportSchema.sql
	Classes/Backend/BackendLayout.php
	Classes/Service/PageService.php
	ext_emconf.php
[TER] 3.0.0
[TASK] Set version to 3.1.0 beta
[BUGFIX] Respect backPath for js inclusion
Merge pull request #152 from hmspl/js_fix

[BUGFIX] Respect backPath for js inclusion
[TASK] Improve debug message on no selected Layout
[BUGFIX] Modified example configuration, dropping deprecated vh