Rename /forget_password url to /forgot_password

Also renames `forgot_password` translation key to
`forgot_password_title` and `forget_password` to
`forgot_password`

Includes entry in CHANGELOG about the breaking change
(and some markdown fixes in there)

templates/user/settings/delete.tmpl

@@ -23,7 +23,7 @@
 							{{.i18n.Tr "settings.confirm_delete_account"}}
 						</div>
 						<div>
-							<a href="{{AppSubUrl}}/user/forget_password?email={{.Email}}">{{.i18n.Tr "auth.forget_password"}}</a>
+							<a href="{{AppSubUrl}}/user/forgot_password?email={{.Email}}">{{.i18n.Tr "auth.forgot_password"}}</a>
 						</div>
 					</form>
 				</div>

templates/user/settings/password.tmpl

@@ -29,7 +29,7 @@
 
 						<div class="field">
 							<button class="ui green button">{{$.i18n.Tr "settings.change_password"}}</button>
-							<a href="{{AppSubUrl}}/user/forget_password?email={{.Email}}">{{.i18n.Tr "auth.forget_password"}}</a>
+							<a href="{{AppSubUrl}}/user/forgot_password?email={{.Email}}">{{.i18n.Tr "auth.forgot_password"}}</a>
 						</div>
 					</form>
 					{{else}}