fix --try --force combo behavior by only returning tweaked easyconfigs for easyconfigs that were listed originally
add unit test for --try --robot --force combination
Merge branch 'develop' into fix_force_try
Merge pull request #1035 from boegel/fix_force_try

fix interaction between --force and --try-toolchain
Merge branch 'develop' into no_trysoftware_robot

Conflicts:
	easybuild/framework/easyconfig/tweak.py