Question about Qasr prayer (prayer of traveler)

Mufti, when you answer the questions, could you please answer as they apply to me And a general ruling (Islamic rule on the subject) so that others can benefit from this discussion. My situation is as follows: I go to work 5 days a week throughout the year. The distance from my home to work is approximately 45-miles one-way trip (90-miles round-trip). Question1: Since I do this traveling regularly, am I classified as a traveler? Question2: At work, when I pray Zuhr, Asr, and Maghrib, should I offer them as regular prayers or should I offer the Qasr prayer during those prayer times? --- I also want to mention that Alhumdulilah, I have space and time for prayer at work, i.e. my employer has no objections with me performing my prayer. Question3: On Jummah, I go to the local musjid which is 10-miles further away from my work. Do I pray the Jummah prayer as I would normally do (i.e. sunnat, jummah fardh, followed by sunnat(s)) or is it something different? Question4: In general, if a person is traveling long distances and finds musjid to pray in, does that person offer Qasr salat or the normal rakats for salat if: A) praying behind an Imam in congregation? B) not praying behind an imam that is the congregation has ended? Question5: Suppose, if on a long trip a person instead of offering the Qasr prayer offered the prayer as he/she would normally do at home (either by mistake OR intentionally) is there any harm? (i.e. are we disobeying Allah)