Revert "Set ‘Skip Install’ build setting on CBL iOS and CBL Listener iOS targets"

This reverts commit 04c8c8aa8e25ec9292296a1f1edbe948826e6386.
API: Renamed CBLDatabaseChange.maybeConflict to .inConflict

Fixes #196
Fixed asyncTask count error in -[CBL_Pusher uploadMultipartRevision:]

Fixes #211
API: Renamed CBLReplication.mode to .status

For couchbaselabs/couchbase-lite-api#45
Fixed broken build of CBLJSViewCompiler target

One of the copied JavaScriptCore headers had a mistake in its doc-
comment, which triggered an Xcode warning. Fixed it.
Also added this target (and the Documentation target) to the All target,
so they’ll get built more often.
API: Updated validation API

Block should now call [context reject] instead of returning NO.
For couchbaselabs/couchbase-lite-api#47
API: Added deprecated typedefs for the old names of some enum types
Moved CBLView instance variable declarations out of the public header