[MM-16677] New unsupported browser page (#11858)

* Added OSVersion to unsupported browser template (and some test code)

* [MM-17569] Working prototype (not functional) of unsupported browser page

* WIP

* WIP

* [MM-17571] Unsupported browser page template logic

* WIP

* [MM-17572][MM-17573] Added browsers and tested for unsupported under IE and Safari

* Clean-up

* Added missing license header

* Fixed a test

* Blank commit to force CI update

* PR feedback

* oops

web/web.go

@@ -44,15 +44,16 @@ func New(config configservice.ConfigService, globalOptions app.AppOptionCreator,
 // Due to the complexities of UA detection and the ramifications of a misdetection
 // only older Safari and IE browsers throw incompatibility errors.
 // Map should be of minimum required browser version.
+// -1 means that the browser is not supported in any version.
 var browserMinimumSupported = map[string]int{
-	"BrowserIE":     11,
+	"BrowserIE":     12,
 	"BrowserSafari": 9,
 }
 
 func CheckClientCompatability(agentString string) bool {
 	ua := uasurfer.Parse(agentString)
 
-	if version, exist := browserMinimumSupported[ua.Browser.Name.String()]; exist && ua.Browser.Version.Major < version {
+	if version, exist := browserMinimumSupported[ua.Browser.Name.String()]; exist && (ua.Browser.Version.Major < version || version < 0) {
 		return false
 	}