pidgin/pidgin

Separate the AccountChooser from its model and move options to filters

Create a store for accounts and a filter to only show connected accounts

Update everything to use the new PidginAccountStore and PidginAccountFilterConnected filter

Add a GtkTreeModelFilter for protocols by id

Testing Done:
Compiled and opened most of the dialogs to make sure they're still working the same. Was unable to test gevolution.

Reviewed at https://reviews.imfreedom.org/r/95/
<?xml version="1.0" encoding="UTF-8"?>
<gresources>
<gresource prefix="/im/pidgin/Pidgin/">
<file>logo.png</file>
<file compressed="true">About/about.ui</file>
<file compressed="true">About/about.md</file>
<file compressed="true">About/credits.json</file>
<file compressed="true">Accounts/chooser.ui</file>
<file compressed="true">Accounts/actionsmenu.ui</file>
<file compressed="true">Accounts/menu.ui</file>
<file compressed="true">BuddyList/menu.ui</file>
<file compressed="true">Conversations/invite_dialog.ui</file>
<file compressed="true">Debug/debug.ui</file>
<file compressed="true">Debug/plugininfo.ui</file>
<file compressed="true">Log/log-viewer.ui</file>
<file compressed="true">Plugins/dialog.ui</file>
<file compressed="true">Plugins/menu.ui</file>
<file compressed="true">Prefs/prefs.ui</file>
<file compressed="true">Prefs/vv.ui</file>
<file compressed="true">Privacy/dialog.ui</file>
<file compressed="true">Protocols/chooser.ui</file>
<file compressed="true">Roomlist/roomlist.ui</file>
<file compressed="true">Whiteboard/whiteboard.ui</file>
<file compressed="true">Xfer/xfer.ui</file>
<file compressed="true">closebutton.ui</file>
</gresource>
</gresources>