separated statistc tab, renamed tracking controller to statistic controller, fixed user tracking to the right filter, fixed loading of statistic tab, fixed toggle mode when caching is activated, fixed nonces, moved toggle preview mode and toggle visibility of statistic tab  to statistic controller #259
removed extra caching chat #259
Removed screenshots and banner from GitHub repo

Those are better maintained in the SVN repo on wordpress.org
Merge pull request #262 from laterpay/feature/259_separate_statistic_tab

separated statistc tab
Fixed coding style
Merge branch 'master' into feature/261_rewrite_css_to_stylus

Conflicts:
	laterpay/assets/js/laterpay-post-view.js
	laterpay/views/frontend/partials/identify_iframe.php