Error with loading PHR in IE11

[kuvakina]

This issue was linked to #176

PHR loads (but it's takes time) in IE11, but there is another issue now. Loaded PHR looks like this: https://www.screencast.com/t/fKtpSYDpGPe

The error is:
SCRIPT438: Object does not support property or method "startsWith"
main.js (1,1153597)

Asked Oleg to look into it.

[kuvakina]

UPD:
The problem with "startsWith" method is that this method isn't supported in IE11:
https://www.screencast.com/t/HYKx7bJk

Also, Oleg said that right now IE11 crushes whole app, the reason could be in this method.
Will look into the way if/how we could solve this.

[PhilBarrett]

Linked with #241

[kuvakina]

@tony-shannon @PhilBarrett

Oleg fixed the issue with the method "startsWith" but now there is another error, that doesn't allow to load the site.
Oleg looking into it.

[kuvakina]

Oleg fixed the problem with errors.

But today the site in IE11 again doesn't load info: https://www.screencast.com/t/VLPqBvVlyGhq
UPD: there was a problem with cashes. That's why I saw green theme and info didn't loaded

Also tested login.myhelm.org , and there are bug with T&C and styles don't load: https://www.screencast.com/t/6YVEPPq63

Could we, for now, use stub page for IE11, that would redirect users to download up-to-date browsers?

@tony-shannon @PhilBarrett

[PhilBarrett]

@BogdanScherban @polesskiy-dev can you please update based on your discussion on Friday. thanks

[kuvakina]

@PhilBarrett Oleg should change the structure of his PR, so we won't have conflicts