Maintenance update; bug fixes
Changes since 2.1.4:
- When restoring sessions, the Value Manager prevents re-assigning value id's beginning with a underscore. (Related to the bug fixed in 2.1.2)
- Quicker startup time as an effect of more frequent "is the page loaded yet?" checks.
- ClientPkgServe waits for builds to complete, if a resource is requested while the build is busy.