Let's upgrade checkstyle and PMD to the latest versions and qulice to java 8

[krzyk]

Right now the latest version of checkstyle is 8.9 and for PMD it is 6.2.0.
One important fix in checkstyle is fix for RequireThis check, which reported false positives for constants in classes - ValidAbbreviationAsWordInName needed to be modified to work around this.

Also note that from checkstyle 7 java 8 is required to use it.
So we need to upgrade qulice to java 8 also.

[krzyk]

@yegor256 Are you OK with upgrading qulice to Java 8?
Java 7 is not currently supported by travis and also we would be limited to checkstyle version 6.19.

[krzyk]

@yegor256 ping

[krzyk]

@yegor256 Do you have any objections in making qulice require java 8? This would allow us to upgrade to the newest checkstyle (which requires java 8).

[yegor256]

@krzyk I agree, let's upgrade to Java 8

[krzyk]

@0crat in

[0crat]

@0crat in (here)

@krzyk Job #880 is now in scope, role is DEV

[0crat]

Bug was reported, see §29: +15 point(s) just awarded to @krzyk/z

[0crat]

@krzyk/z everybody who has role DEV are banned at this job; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV are banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV are banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV is banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV is banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV is banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV is banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV is banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[0crat]

@krzyk/z everybody who has role DEV is banned at #880; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[krzyk]

@0crat assign me

[0crat]

@0crat assign me (here)

@krzyk The job #880 assigned to @krzyk/z, here is why; the budget is 30 minutes, see §4; please, read §8 and §9; if the task is not clear, read this and this; there will be no monetary reward for this job

[0crat]

It is strongly discouraged to assign jobs to their creators, see §19: -15 point(s) just awarded to @krzyk/z

[0crat]

Manual assignment of issues is discouraged, see §19: -5 point(s) just awarded to @krzyk/z

[krzyk]

@krzyk fixed in #924

[0crat]

Job was finished in 0 hours, bonus for fast delivery is possible (see §36)

[0crat]

Order was finished: +35 point(s) just awarded to @krzyk/z

[0crat]

The job #880 is now out of scope