New Features: * [Easy to use part parameter filter](https://wiki.partkeepr.org/wiki/New_and_Noteworthy/1.4.0#Easy_Parametric_Filter) * [Mobile Frontend Proof of Concept](https://wiki.partkeepr.org/wiki/New_and_Noteworthy/1.4.0#Mobile_Frontend_Proof_of_Concept) Bugfixes and other features: * PartKeepr now displays the cause if an item can't be deleted, because it's in use somewhere else * The default AJAX/XHR request timeout for the frontend has been increased from 30s to 300s [#914](https://github.com/partkeepr/PartKeepr/issues/914) * It's now possible to run PartKeepr in specific reverse proxy scenarios, see [the wiki](https://wiki.partkeepr.org/wiki/KB00008:PartKeepr_behind_a_reverse_proxy) for a description * Several performance improvements to the project reports * Fixed an issue where setup didn't properly write the PostgreSQL configuration to parameters.php