Update the message, title and description of S1607

Description of rule RSPEC-1607 has been updated to:

• change its title
• update the issue message
• also cover junit5 @Disabled annotation, and not only Junit4 @Ignore  The JUnit5 @Disabled annotation was already supported.
• update the issue description to include a sentence about the assumeTrue and assumeFalse calls

The current implementation also targets ignoring tests with Assume.assumeFalse(true); , we should check if it makes sense with the current description, and eventually:

• Remove completely this case. It is not documented anywhere, it could be removed without any trouble.
• Add a new rule. If it happens that this pattern is actually used, create a rule targeting it.

The description was updated with a sentence explaining the case of using assumes.