* The "account-changed" signal is now properly managed in the ModestTnyAccountStore...

	* The "account-changed" signal is now properly managed in the ModestTnyAccountStore and in ModestTnyAccount, there were some errors in the handler that were actually preventing the account update to happen
	* Changed the signature of the method modest_tny_account_update_from_account
	* Added display_name_changed signal to notify changes in the display name of the accounts
	* ModestConf does not listen for key changes, all signal emissions related to changes in the configuration must be triggered by the account manager
	* Removed the ModestConf delayed notification system, we do not need it since we're not listening for chey changes there anymore
	* All the modest_account_mgr_(get/set)_(int/book/string/list) are now private methods and could not be used by third parties
	* Added a lot of getters and setters to the modest-account-mgr-helpers. We did that to ensure that nobody changes the configuration keys directly (because maybe we want to notify key changes)
	* Renamed old modest_server_account_get_xxx by modest_account_mgr_get_server_account_xxx
	* Renamed old modest_server_account_set_xxx by modest_account_mgr_set_server_account_xxx
	* FolderView now changes the display name of an account if it changes
	* AccountView now changes the display name of an account if it changes
	* Removed unused code here and there
	* Several aesthetic changes here and there

* TODO: I realized that the account-settings dialog thinks that something has changed when you change it and then revert the change
	* TODO: detect in the account-settings dialog which changes should issue an "account-changed" signals and which ones not, for example a change in the display name should not force an account reload

pmo-trunk-r3433