Removed RTL support for now.
Removed template-blog.php as it is not required.
Added esc_html() to altitude_home_button_text.
Replaced get_altitude_sidebar() with altitude_get_sidebar()
Removed altitude_register_styles() and enqueued styles directly in altitude_load_styles() and altitude_admin_scripts().
Hooked altitude_load_styles() to wp_enqueue_scripts instead of wp_print_styles