Uniformize level/discriminant/conductor dropdowns

[roed314]

Following up on #5244, it would be nice to standardize the select boxes attached to integer quantities such as level, discriminant and conductor (and add them to places like ECNF conductor norm). The options in CMF are currently the most extensive (prime, prime squared, prime power, square, squarefree, powerful, divides, multiple of) compared to ECQ (prime, p-power, sq-free, divides, multiple of). But many of these inputs require supporting columns in the database (e.g. level_is_prime), so uniformizing these search boxes is not just a front end job.

[alozanoroble]

Similarly, it would be useful to allow ranges of primes (and other similar options) for "bad p" (how do you make "bad p" as you made "level" show up?). For the j-invariant, it may be useful to add some other options, such as "integral" or some control over the primes dividing the denominator.