Editing documentation of a repository fails in Internet Explorer and "hangs" the page.

[TomaszSzt]

Steps to reproduce: 1.Create new repository,check "include readme". 2.Select documentation 3.Select edit to edit the readme.md 4.Click the diskette icon ("Commit to GitBlit") 5.Observe: Do some clicking, observe that now the page is totally "frozen". There is no expected pop-up dialog, the window is blackened and blocked.

Workaround: In IE - none. When using Edge or Firefox it works OK except a case when a window is very small. In such case the pop-up dialog is partially hidden what is a minor inconvenience.

Additional information: Client side: IE 20H2, Windows 10 Server side: Ubuntu Gitblit: v1.8.0