Prepare for new development iteration.
Optimize hashing

The method IOUtils.toByteArray() is far more efficient than the formerly used while-loop.
Removed unused imports
Variable name changed
Persist the data in fallbackStorageProperties once after the execution
is finished
Renamed fallbackStorageProperties
Removed comment. Persisting is done once at the end, not immediately
Closing the OutputStream has only to be done once in finally.
replaced tabs with spaces
Merge remote-tracking branch 'origin/1.7.x' into 1.7.x
add more unit tests and fix failing tests
fix failing unit test
Merge branch 'issue892' into 1.7.x
fix failing unit test
Merge branch 'issue892' into 1.7.x
Merge branch '1.7.x' into issue891
Merge branch 'issue891' into 1.7.x
update to less4j 1.8.1
Merge branch 'issue885' into 1.7.x
Merge remote-tracking branch 'upstream/1.7.x' into 1.7.x

Conflicts:
	wro4j-core/src/main/java/ro/isdc/wro/model/resource/support/hash/AbstractDigesterHashStrategy.java