* wesnoth-mode.el (wesnoth-mode-version): Updated version string to `1.2.5'.
(wesnoth-tags-list): Added several new tags.
(wesnoth-insert-tag): Cleaned up and fixed remaining positioning bugs.
(wesnoth-nth-pair-position): New function. Ensure the closing tag is
positioned correctly.
(wesnoth-insert-element-separately, wesnoth-insert-missing-closing): Fixed
remaining positioning bugs.
(wesnoth-navigate-element): Trivial aethetic clean-up.
(wesnoth-search-for-matching-tag): Return t on success.
(wesnoth-indent): Fix positioning of attributes after a closing tag.
(wesnoth-check-structure): Fixed a bug where #else would be added as an
opening.