[FEATURE] added Boost-like range

git-svn-id: http://svn.seqan.de/seqan/trunk@14618 e6417c60-b987-48fd-844e-b20f0fcc1017
[FIX] False view position computation in integrateAlign()

git-svn-id: http://svn.seqan.de/seqan/trunk@14619 e6417c60-b987-48fd-844e-b20f0fcc1017
[NOP] Cleaned up integrateAlign()

git-svn-id: http://svn.seqan.de/seqan/trunk@14620 e6417c60-b987-48fd-844e-b20f0fcc1017
[FIX] Begin position clipping if no left extension happens

git-svn-id: http://svn.seqan.de/seqan/trunk@14621 e6417c60-b987-48fd-844e-b20f0fcc1017