The value from max memory isn't necessarily the -Xmx parameter,
therefore we remove the label

fixes #413

To fix the IE11 css quirks we need to use the ngStyle directive
instead of just using expressions inside regular style attributes.

fixes #280

In case dropwizard is used the heap metrics are in bytes and not in kilobytes.
This is deteceted by the presence of heap.max. For Spring Boot 2.0 there is an
issue filed to deliver bytes see spring-projects/spring-boot#6413

fixes #234