Update MembershipHelper.cs

The parameter "logMemberIn" wasn't used so setting "LoginOnSuccess" on the RegisterModel didn't have any effect. By checking the parameter you can disable automatically logging in the user after registration. If registration failed, it would have returned null in an earlier stage so it's safe to say registration succeeded at this point.
U4-5730 7.2.0 Grid - edit parameters of macro added into grid content
Merge pull request #524 from Odie20XX/patch-1

Update MembershipHelper.cs
#U4-5738 Fixed Due in version 7.2.0

Umbraco 7.2 installation via NuGet fails
Move/remove row button hover wasn't correct, point on control's methods instead of row's
Making sure lower-case "Change password" is also removed
U4-5728 - Do not run KeepAlive, ScheduledPublishing, without an url
Adds support for grid row configuration and styling
Merge
Grid layout changes to support breaking rows
Minor visual annoyances + changed output html

changes made due to feedback from Adam, Rune and Simon on how to make
the grid as flexible as possible
Grid mock data and modified tests

all client side changes, will not affect live sites
Grid template preview

New template preview for content section
Update build.bat to beta2
Remove ace from bower and directives folder