Merge branch '1.7.x' into issue660
add back the test resource which proves that the bug still exist for a particular situation
JSMin: do not minify inside quasi-literals.

Ported from douglascrockford/JSMin@a9b4755
JSMin: ignore byte-order mark.

Ported from douglascrockford/JSMin@f062955
JSMin: do not remove line break before exclamation mark and tilde.

Ported from douglascrockford/JSMin@5ca277e
JSMin: do not remove space between plus (or minus) signs at the start of a line.

Ported from douglascrockford/JSMin@633d992, douglascrockford/JSMin@0d58ea6
and douglascrockford/JSMin@2a943db
JSMin: do not process regexps after operators.

Ported from douglascrockford/JSMin@cec896f and
douglascrockford/JSMin@1bf6ce5
JSMin: do not process regexps after '/' operator.

Ported from douglascrockford/JSMin@0d58ea6
JSMin: handle corner cases on comments after unclosed regexp.

Ported from douglascrockford/JSMin@0d58ea6
Merge pull request #152 from olim7t/issue660

Issue660: port remaining JSMin fixes
fix failing unit test
Merge branch 'issue660' into 1.7.x
add new configuration option contextFolders (csv)
replace contextFolder with contextFolders & fix failing unit tests
remove invalid submodule
servletContext option now accept multiple values (CSV).
move aggregatedFolder computation into dedicated class and write more unit tests
Merge branch 'issue788' into 1.7.x
The ignoreMissingResource parameter is now string and accepts null, meaning that the default value will be used.
Merge branch 'issue790' into 1.7.x