fix(security): soft navigation to not rely on jquery.history

[adrienjoly]

Fixes https://github.com/openwhyd/openwhyd/security/code-scanning/15 and https://github.com/openwhyd/openwhyd/security/code-scanning/14

Contributes to #669.

Challenge

To implement Openwhyd's soft/ajax-based navigation logic (that does not interrupt the music playback when navigating), jquery.history has been used indirectly by a jQuery-based abstraction layer of window.history: jQuery History. (source code)

=> This PR rewrites that logic, using the browser's History API directly.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
-1.87%	100.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (4271519)	5126	3164	61.73%
Head commit (34b62a2)	5149 (+23)	3082 (-82)	59.86% (-1.87%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#671)	1	1	100.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[adrienjoly]

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