Devhelp 41.beta * Translation updates * Fix build in sandboxed environments with no network * Update list of translatable files [#47] * Switch to gi-docgen to build the libdevhelp API reference * Move the "Show side panel" action from the menu to the header bar [!36] * Fix donation link in the appdata information [!39] * Build against WebKitGTK 4.1 [!38] * Build against GLib 2.70 [!40]