Assignment of carrier-level @ORDER attribute in structMap

[bitsgalore]

Currently, if there is more than 1 carrierType in a SIP, numbering of carriers via the @ORDER attribute is repeated for each carrierType group. For example, for a SIP with 3 audio CDs and 2 video DVDs, we get this (note how the @ORDER attribute is reset to 1 for the first dvd-video):

<mets:div TYPE="cd-audio" ORDER="1" ADMID="digiprovMD_1 techMD_25">
</mets:div>
<mets:div TYPE="cd-audio" ORDER="2" ADMID="digiprovMD_2 techMD_45">
</mets:div>
<mets:div TYPE="cd-audio" ORDER="3" ADMID="digiprovMD_3 techMD_48">
</mets:div>
<mets:div TYPE="dvd-video" ORDER="1" ADMID="digiprovMD_4 techMD_50">
</mets:div>
<mets:div TYPE="dvd-video" ORDER="2" ADMID="digiprovMD_5 techMD_51">
</mets:div>

For a variety of reasons it might be better to continue the numbering throughout all carriers, like this:

<mets:div TYPE="cd-audio" ORDER="1" ADMID="digiprovMD_1 techMD_25">
</mets:div>
<mets:div TYPE="cd-audio" ORDER="2" ADMID="digiprovMD_2 techMD_45">
</mets:div>
<mets:div TYPE="cd-audio" ORDER="3" ADMID="digiprovMD_3 techMD_48">
</mets:div>
<mets:div TYPE="dvd-video" ORDER="4" ADMID="digiprovMD_4 techMD_50">
</mets:div>
<mets:div TYPE="dvd-video" ORDER="5" ADMID="digiprovMD_5 techMD_51">
</mets:div> 

With this change the cd-rom, cd-audio etc. directory level in the SIP can also be eliminated.

Reasons for doing this:

• Current manual entry of carrierType in Iromlab is prone to entry errors and makes things unnecissarily difficult for an Iromlab operator.
• For an Iromlab operator, establishing the actual carrier type from the physical media is not always straightforward (e.g. cd-rom vs cd-video; cd-roms that turn out to contain audio, etc.)
• The actual carrier type is already established automatically and unambiguously by cd-info.
• The value from cd-info may contradict the manually-entered value, and there's no straightforward way to handle this
• It would also allow us to get rid of the confusing processing by carrierTypeGroup in the code

See also this Iromlab issue: https://github.com/KBNLresearch/iromlab/issues/66

[bitsgalore]

Numbering checks now adapted: https://github.com/KBNLresearch/omSipCreator/commit/3ff31e99f4aaef087e429f75e168b34823e58b4f

[bitsgalore]

With this change the cd-rom, cd-audio etc. directory level in the SIP can also be eliminated.

Done, all changes to release 0.7.0: https://github.com/KBNLresearch/omSipCreator/releases/tag/0.7.0