Entire codesniffer JS source file is written to logs for each accessibility collect

[tkaik]

Describe the bug
When using the accessibility collector in a suite, the entire codesniffer JS source file is written to logs for each accessibility collection. This happens only in the DEBUG logs level - however this should not happen even on this level - this JS file contains few thousands lines of code.

CC @plutasnyy

• Version used: AET 3.1.0

To Reproduce
Steps to reproduce the behavior:
0. Make sure that the Logger on your AET environement (karaf) is set to DEBUG mode

1. Prepare a suite XML with a test using accessibility collector.
2. Run the suite
3. View the worker.log file - see the entry starting with
   <time> | DEBUG | com.cognifide.aet.jobs | JavaScriptJobExecutor 51 | Executing JavaScript command: /* followed by the whole source of htmlcs.js file

Expected behavior
Option 1 - When writing the JS code snippet to the log file, it's length should be limited to some reasonable value (e.g. first 100 characters).
Option 2 -The Accessibility collector should not log the content of executed JS file at all

[malaskowski]

We had already short chat about that with @plutasnyy
My suggestion is to:

1. Change log level in JavaScriptJobExecutor.executeJs to TRACE (trace is a good level to log such details).
2. Add separate DEBUG level logs in every collector/modifier that calls JavaScriptJobExecutor.executeJs that will say something like:

Executing MODIFIER_NAME ...