Opening Ceremony script additions

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**Describe the solution you'd like**
I would like to have more control over what is said in the opening ceremony script. Especially in the transitions between sections. Case in point:
Allow editing of the phrase so we can enter details about the emcee before we transition to them. For example, "I would now like to introduce you to our Emcee for the day - they are a FIRST Alum from Team XXX and etc. etc. Please welcome, YYYY."
I would like to put that into the script.

Also at the end of the ceremony as the teams set up for the first match, allow a place to enter a sentence or two. For example, "While the teams set up for Match #1, here is the longer animation video that explains the game."

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