Cookie/inactivity timeout delay is way too short and doesn't take multiple tabs into account

What version of Invoice Ninja are you running? ie v4.5.25 / v5.0.30 Whatever is running on the InvoiceNinja.com SaaS What environment are you running? InvoiceNinja's SaaS Have you searched existing issues? Yes Have you reported this to Slack/forum before posting? No (I will not be on slack/forums for bug reports) Describe the bug I'm currently evaluating InvoiceNinja for my needs and would be planning to pay for the SaaS version. However it has one issue that drives me up the walls: it keeps logging me out in the middle of my work. Please slack up invoiceninja's cookies/timeout policy, so that it doesn't log me out all the time. The cookie expiration policy (or whatever controls "inactivity") in InvoiceNinja is _way_ too short, and this destroys productivity. Every time the software zealously logs out the user, it not only interrupts and irritates the user, it also loses which page/activity they were on. Even worse: half of the time, t…