add karma configuration and gulp test tasks

The configuration itself is stored in `karma.conf.json`.
It is required by both karma.conf.js and both gulp tasks.
The default build task is aborted if any test fails.
Test dependencies are added to package.json.
test and enhance url module

Add method getFragment to retrieve arbitrary parameters in
`location.hash`.
Refactor method checkCurrent to return the parsed time codes in the
t-fragment.
prevent double testing on grunt serve

Separate build task that can be called inpependent from test.
Start 'build' at 'default' and 'serve'.
fix formatting of timecode module
add example for deep linking (embedded players)
clean up app module
nice up examples/index.html layout
WIP - deeplinking embedded players
add charset meta-tag to examples
update jshint to 1.8.3
refactor SCSS mixin to pwp-flexbox
ignore atlassian connector file
update packages - fixes #173
add pragma to url module testsuite
add test globals to test hint conf
add tests for deeplinking with endtime
ignore some files in bower package
Fix display of duration format

- implement and call 'fromTimeStamp' function in infotab.js to render duration format
- add missing parameters in example file 'cre-206/index.html' like
publicationDate, showURL, correct downloadURL and correct format of duration
testing: add karma-phantomjs-launcer to package.json
adjust test expectations