Ignore dependencies for BOM-like projects.

[sdedic]

Following suggestion in NETBEANS-5846. The ProjectInfoBuilder in gradle-tooling was changed so it does not produce unresolved_problems if the project uses javaPlatform plugin w/ dependencies enabled.

The 2nd commit is a bugfix - during testing, I used Reload Project action and the project did not degrade to the new (broken) state after change in buildscript + reload. My fault, the force parameter to loadProject was not used at all.

[lkishalmi]

Looks good, though you might also would like to bump this number:

netbeans/extide/gradle/src/org/netbeans/modules/gradle/cache/ProjectInfoDiskCache.java

Line 42 in 443c86c

private static final int COMPATIBLE_CACHE_VERSION = 19;

That would make disk cache invalid and force NB to re-load the project info.

[sdedic]

Feedback incorporated, 3 days from approval; merging.